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what is flashing an ecm

by Nina Hoeger Published 1 year ago Updated 1 year ago
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Reflashing an ECM is a tuning technique that is also often called flashing, remapping
remapping
Engine tuning is the adjustment or modification of the internal combustion engine or Engine Control Unit (ECU) to yield optimal performance and increase the engine's power output, economy, or durability.
https://en.wikipedia.org › wiki › Engine_tuning
, or flash tuning. Like any computer, your car's ECM has software with different settings or parameters, and these can be changed to alter the performance and driving limits of a vehicle.
Sep 16, 2019

Full Answer

What is module programming (ECM flashing)?

What is Module Programming (ECM Flashing)? Module programming, also known as module flashing, module reflashing, ECM flashing, and ECM reflashing, is a tuning technique for your vehicle’s computer. Reflashing an engine computer is the process of replacing the existing software in a vehicle controller with new software.

Can You flash an aftermarket ECM?

Flash Tuning for a Different Vehicle – This type of reflash is performed when an aftermarket ECM is installed in a vehicle. For people who just want the latest OEM software, flashing their new aftermarket engine computer can give it the same parameters and settings they had with their previous factory engine computer.

What does reflashing an ECM mean?

Reflashing or remapping an engine computer is essentially just the process of replacing the existing software in a vehicle controller with new software. Reflashing an ECM is an immensely powerful technique that allows the engine to be tuned in the same way that the factory calibration engineers perform the task. What Is an ECM?

What is an ECM update on a car?

All modern commercial motor vehicles (CMVs) have an engine control module (ECM). Most engine power complaints and warning lights come from them and over time ECU updating is necessary for recalls, customer issue, and new software or firmware release. What does it cost to flash a PCM? $60 is a reasonable price.

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What does it mean to flash ECM?

Flashing an ECU is tuning or reprogramming the engine of your motorcycle to take what the manufacturer or a previous owner sold you and (ideally) enhance its performance.

Do you have to flash an ECM?

Yes, a new ECM will have to flashed before you can even start your vehicle. The "flashing" or programming of the ECM will require your VIN number to the supplier, who should be updating the most current software for your specific vehicle.

What happens when you flash an ECU?

ECU flashing, also referred to as tuning, updates the software that runs your vehicle by changing or modifying the vehicle's memory chip in the ECU. These changes can notably improve your engine performance by improving power, producing cleaner emissions and bettering fuel efficiency.

How long does it take to flash ECM?

ECM Reflash Costs and Warnings Re-flashing an ECM takes about 2 hours from start to finish at a CAT Dealer.

How much does it cost to get ECU flashed?

An ECU flash is undeniably more advanced and streamlined, and generally speaking it costs about $250 to $300 to have a shop perform a flash, which is actually cheaper than buying a Power Commander.

How much does it cost to have a car computer flashed?

Prices could range from $80 to $150, depending on the service location you choose. The process takes around about half an hour, but keep in mind that most auto-electricians charge you for at least one hour of work. PCM reprogramming is also one of the few times we'll recommend a dealership over an independent mechanic.

How long does it take to reflash a ECU?

If you take your vehicle to a repair shop that has the right tools and the information from the manufacturer, the process takes about 30 minutes to complete. Reprogramming a transmission shouldn't take very long.

Does ECU flash increase horsepower?

An ECU flash tune gives you more horsepower and torque by adjusting the spark timings in your engine's cylinders. Basically, it optimizes for higher octane fuel so your engine gets a boost in power. That power comes out as more horsepower and torque.

How do I program my ECM to my computer?

0:291:55How to Reprogram Your Car's Computer - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo today i'm going to show you a new tool the flash 2 reprogrammer by cardone industries itMoreSo today i'm going to show you a new tool the flash 2 reprogrammer by cardone industries it reprograms the computer on your vehicle. Without taking anything off it just plugs into the dash.

Can you flash your own PCM?

Flash reprogramming PCMs is NOT for the feint of heart. First, you have to have a scan tool or J2534 device that can reprogram your vehicle's computer. Then you have to go to the vehicle manufacturer's service information website, pay an access fee and find the correct update for your vehicle.

Does a used ECM need to be reprogrammed?

Reprogramming your ECM is necessary for keeping your vehicle control software up to date. Much like the operating system on your home computer, improvements in software are often made by your car's manufacturer. The software can be updated simply by downloading and installing the latest version.

How do you fix an ECM failure?

Fortunately, these issues can usually be resolved by replacing the corroded wires. If one of the wires shorts out to the frame, the ECM may fail entirely. This can also happen due to power surges due to a lightning strike or arc welding on the vehicle frame. Installing a new starter can also cause ECM failure.

How do I program my ECM to my computer?

0:291:55How to Reprogram Your Car's Computer - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo today i'm going to show you a new tool the flash 2 reprogrammer by cardone industries itMoreSo today i'm going to show you a new tool the flash 2 reprogrammer by cardone industries it reprograms the computer on your vehicle. Without taking anything off it just plugs into the dash.

Can you flash your own PCM?

Flash reprogramming PCMs is NOT for the feint of heart. First, you have to have a scan tool or J2534 device that can reprogram your vehicle's computer. Then you have to go to the vehicle manufacturer's service information website, pay an access fee and find the correct update for your vehicle.

How do you flash a computer?

Run the BIOS update. For flash drives, reboot your computer with flash drive inserted. Press "F12" to view boot options, and select "USB" or "Removable Media." For desktop executable files, double-click the file to start the update.

How do you program a GM ECU?

1:595:12GM Service Repair Programming | ACDelco TechConnect - YouTubeYouTubeStart of suggested clipEnd of suggested clipTurn ignition off verify the vehicle's battery is fully charged turn ignition on engine off connectMoreTurn ignition off verify the vehicle's battery is fully charged turn ignition on engine off connect the J 2534. Device to the data link connector then connect your de 25 34 device to the PC switch.

What is an ECM update on a car?

All modern commercial motor vehicles (CMVs) have an engine control module (ECM). Most engine power complaints and warning lights come from them and over time ECU updating is necessary for recalls, customer issue, and new software or firmware release.

How much does a flash update cost?

By the time the shop download the update, hooks everything up and waits for the update to complete, you’re looking at one hour of shop time plus the cost of the update. Depending on the labor rates in your area, that’ll cost between $150 and $200.

How much is an ECM update?

The cost for the new ECM will typically be around $800, with labor around $100, bringing the average total expense for an ECM replacement to approximately $900 before taxes and fees. This can increase depending on the shop you go to or the type of car you, running as high as $2,000.

What does flashing a PCM mean?

Reflashing is a process where you electronically transfer approved files from a vehicle manufacturer’s website using a diagnostic connector. This process has many names. You might hear the terms PCM programming, PCM reprogramming, PCM flash, or PCM reflash. They all refer to an upgrade of your PCM’s microchip.

What happens when you flash a PCM?

During the flash reprogramming procedure, the PCM loses communication with other modules on the vehicle that may set a number of ‘false’ trouble codes for the transmission module, ABS module, body control module, etc.

Is a PCM and ECM the same thing?

The main difference between the two is that the ECM controls specific parts of the engine, regulating and sending commands. While the PCM is used in newer models to control almost all engine functions.

Does a PCM have to be flashed?

Reflashing must be done in the car. If you replace a failed GM PCM with an unprogrammed service unit, a program must be written into the PCM before the car will run, but the PCM must be installed in the car to load the program. If you own flashing equipment, it’s no problem.

Why do we need an ECM reflash?from carcomputerexchange.com

Essentially, an ECM reflash is either done to improve the performance (or make it more to your liking) or to match an aftermarket ECM with its new vehicle.

What is an ECM in a car?from carcomputerexchange.com

As we’ve explained before in past articles, your car’s ECM is its central computer. It controls, monitors, and regulates all of your engine function to ensure your vehicle is running at its optimal performance level. What makes engine computers especially advanced is the fact that, not only are they tailored to your specific vehicle, they are also able to learn about you, your driving habits, and the conditions you typically drive in.

Why do we remap and reflash?from carcomputerexchange.com

At Car Computer Exchange, we remap and reflash repaired engine control modules in order for them to work seamlessly with vehicles they weren’t specifically designed for. Reflashing allows the engine to be tuned calibrated in the same way that the factory does it. In other words, flashing an ECM allows it to have the same software and parameters that it would have were it in a vehicle rolling new off the assembly line.

What is flash tuning?from carcomputerexchange.com

Flash Tuning for a Different Vehicle – This type of reflash is performed when an aftermarket ECM is installed in a vehicle. For people who just want the latest OEM software, flashing their new aftermarket engine computer can give it the same parameters and settings they had with their previous factory engine computer.

Why does my car flash?from carcomputerexchange.com

Flashing because of Vehicle Issues – If your vehicle is showing false error codes, has a hot or cold starting issue, experiences idle roughness, stalling, or an emissions failure, it may be because the existing software needs to be replaced. Flash Tuning for a Different Vehicle – This type of reflash is performed when an aftermarket ECM is ...

Why do you need to remap an ECM?from carcomputerexchange.com

Remapping an ECM for Economy – For business owners who have a fleet of commercial vehicles, fuel efficiency is the name of the game. Flash tuning an ECM can help you decrease your fuel costs by optimizing your engines for fuel economy.

What is engine control module?from carcomputerexchange.com

The real brains behind your engine control module is its software. Essentially, the software determines the limits within which the engine is allowed to operate. These original parameters are at least in part determined by what the manufacturer expects you to get out of the vehicle and the level of performance that they think you expect to get out of it.

Why do car makers issue flash updates?

Car makers issue a FLASH update when they discover a software bug that can set a false trouble code or cause performance issues. Once they’re aware of the problem, they re-write the software to correct the mistake. Then they issue a service bulletin to dealers and independent shops informing them of the availability of new software that fixes the problem.

How much does a FLASH update cost?

They can buy daily, monthly or yearly access or the shop can buy software updates for just a single vehicle. For example, GM charges a flat $40 to access all the software/programming for a single VIN number.

How long does it take for a flash update to work?

Then they activate the update. Flash updates can take as little as 5 minutes to complete or as long as 45 mins for a large re-program.

Why do we need an ECM reflash?from carcomputerexchange.com

Essentially, an ECM reflash is either done to improve the performance (or make it more to your liking) or to match an aftermarket ECM with its new vehicle.

What is an ECM in a car?from carcomputerexchange.com

As we’ve explained before in past articles, your car’s ECM is its central computer. It controls, monitors, and regulates all of your engine function to ensure your vehicle is running at its optimal performance level. What makes engine computers especially advanced is the fact that, not only are they tailored to your specific vehicle, they are also able to learn about you, your driving habits, and the conditions you typically drive in.

Why do we remap and reflash?from carcomputerexchange.com

At Car Computer Exchange, we remap and reflash repaired engine control modules in order for them to work seamlessly with vehicles they weren’t specifically designed for. Reflashing allows the engine to be tuned calibrated in the same way that the factory does it. In other words, flashing an ECM allows it to have the same software and parameters that it would have were it in a vehicle rolling new off the assembly line.

What is flash tuning?from carcomputerexchange.com

Flash Tuning for a Different Vehicle – This type of reflash is performed when an aftermarket ECM is installed in a vehicle. For people who just want the latest OEM software, flashing their new aftermarket engine computer can give it the same parameters and settings they had with their previous factory engine computer.

Why does my car flash?from carcomputerexchange.com

Flashing because of Vehicle Issues – If your vehicle is showing false error codes, has a hot or cold starting issue, experiences idle roughness, stalling, or an emissions failure, it may be because the existing software needs to be replaced. Flash Tuning for a Different Vehicle – This type of reflash is performed when an aftermarket ECM is ...

Why do you need to remap an ECM?from carcomputerexchange.com

Remapping an ECM for Economy – For business owners who have a fleet of commercial vehicles, fuel efficiency is the name of the game. Flash tuning an ECM can help you decrease your fuel costs by optimizing your engines for fuel economy.

What is engine control module?from carcomputerexchange.com

The real brains behind your engine control module is its software. Essentially, the software determines the limits within which the engine is allowed to operate. These original parameters are at least in part determined by what the manufacturer expects you to get out of the vehicle and the level of performance that they think you expect to get out of it.

How much does a PCM flash cost?

However, these kinds of tools are meant for professionals, so new models can be as much as $1250. Reflashing can also be accomplished using professional grade scan tools, which include the same functionality, plus many other features unrelated to reflashing. These are even more expensive. They can cost from $1000-$5000. Update subscriptions can also be up to $800 per year or more depending on the vendor.

What is the PCM in a car?

The powertrain control module (PCM) is one of the most important computers in your car, usually managing the engine and transmission, depending on the make of your vehicle. It’s often referred to as the “brain” of your car because it controls so many functions.

Why Would You Reflash Your Powertrain Control Module?

Auto Manufacturers are continually updating controller software to solve problems such as false diagnostic trouble codes , hesitation, rough idle, emissions problems, hard starting, poor fuel economy and other issues. If you’re not under warranty or using a dealer for tune-ups, your car could benefit from reflashing.

What is the Powertrain Control Module Reflashing Process?

Every car manufacturer is a little different, but these procedures provide a broad overview of how it works in practice.

How long does it take to repair a PCM?

Solo Auto’s dedicated technicians can repair or reflash within 24 to 48 hours, and then have your unit back in the mail on its way to you. If your PCM needs repair, we’ll assess the symptoms, calibrate the codes, and conduct an internal and external inspection. With this preliminary testing, our in-house techs have the information needed to repair your unit. Before we send it back, we’ll test its functionality, update the programming codes, and retest.

Does PCM reprogramming always go smoothly?

PCM reprogramming doesn’t always go smoothly. If the programming seems to stall, the tool company’s technical support line can be an essential resource. There are a few common problems that may come up:

Where is the diagnostic tool located on a car?

4. Connect the tool to the diagnostic connector on the vehicle (located under the dash near the steering column).

How to check car performance after reflashing ECU?

Another way is to check the car’s performance after reflashing the car ECU to a dyno. When you go to a dynamometer (also known as dyno), the mechanic will run a test to see the car’s current performance, and you can also see that.

When should I reflash my ECU?

There are different types of ECU reflashing. Tuning ECU enhances your car performance. That’s why first you need to know which types of ECU you need for your car and why. Most car owners reflash ECU for performance, and if it’s you, then when your car performance gets weak gradually, you can notice that. Therefore, You should reflash your ECU for better performance of your car.

How much does it cost to reflash ECU?

The cost of reflashing an ECU depending on the auto shop. The average auto shop can cost you around $120 to $250 to reflash ECU. Reflashing a car computer cost can get higher if your car has other issues like engine existing faults. And labor cost to reflash an ECU can be $50 to $20 hourly.

Is ECU reflash good?

ECU reflash is good for your vehicle performance. Greeting satisfaction from ECU reflashing or Remapping depends on the car owner. There is no harm to your car if you reflash an ECU. If you want to reflash ECU, you can do it without any doubt, and reflashing is good.

What is the best way to reflash an ECU?

If you want to reflash ECU, you will need a laptop and onboard diagnostics (OBD II). The OBD 2 code reader will allow you to read the factory data out of ECU; when you read the date of ECU, you can modify those ECU data, which is ECU reflashing, and this is how the reflashing ECU is done.

What is an ECU?

An engine control unit (ECU) is the brain of a vehicle. ECU controls the car’s specific function. An ECU monitoring almost all components of a car. The engine control unit takes information from the various sensors on the engine. Whether you are talking about car safety features or car comfort features, the engine control module unit (ECU) controls these components. An ECU or ECM is the essential component in every vehicle.

How to check engine for existing faults?

To check the engine for existing faults, you have to plug-in in the bad common system and clear the car’s onboard computer for details. When you check the engine for faults, you also get the engine’s exact serial number and the engine’s exact specification, which will help you load the right software in your ECU. So, you should not avoid checking the engine for existing faults before tuning ECU.

How does an ECM work?

When you first turn on the ignition switch in the car, the ECM goes through a power-up mode not unlike your desktop PC. The ECM’s microprocessor has embedded software that instructs the microprocessor on its initial tasks. One of these tasks is reading the PROM. The software contains the instructions on how to control an engine or powertrain. Using this software, the ECM will know how to initiate ignition primary dwell and actuate spark output, as well as how to actuate the fuel injectors, how to control the EGR valve, etc. What it does not know is the quantities: how much spark advance, how much fuel to inject, how much exhaust gas recirculation, etc.

Why is ECM important?

The ECM is an important part of this equation as well. Without the ability to flash program, you are forced to rely on your supplier for inventory. Without the ability to flash, carrying high-moving ECM part numbers is not an option unless you want to tell the customer to go to the dealer for programming.

What was the EEPROM used for in the 90s?

EEPROMs were used in some early ’90s Geo products, as well as some early ’90s Cavaliers, Corsicas and Berettas. Using the TECH I, GM’s OE scan tool, a technician could recalibrate the ECM by reprogramming the EEPROM without removing it from the vehicle. The scan tool would hook up to the diagnostic port of the car, electrically erase the EEPROM and then reprogram it with the new software calibration. This process was much quicker and simpler than removing the ECM from the vehicle, opening it up, removing the PROM, obtaining the PROM ID number, ordering the part and installing everything in the opposite order of disassembly. With the new electrically erasable and programmable repair method, a great many potential points of failure and error were eliminated. Flashing was the next step.

What is flash technology?

Regarding programming speed, flash technology allows the entire programming of the flash-PROM to be erased all at once and then reprogrammed the same way. The entire page is deleted and reprogrammed all in one continuous step, and that means that one more potential source of error is eliminated in the process. During the flash reprogramming process, all of the input data to the flash-PROM is verified to ensure accuracy.

What does flash programmable mean?

Almost all new vehicles today are now flash programmable. This means that somebody will need to perform the work of programming the ECM. You’d rather not have the OE dealership do the work, for if nothing else, this is an extra step in the repair process.

When did flash start on GM cars?

Flash programming was started on certain GM models as early as 1993. Once 1996 rolled around (along with OBD II), all GM vehicles had it. (See the charts below for GM flash applications.)

Is flash programming reliable?

Remember that as with anything technical, you want great customer service and even better product support from whomever you choose to do business with. Regarding the operation of the system, your staff should become quite proficient in the operations of flash programming with only one hour’s worth of dedicated training. The software is reliable and is actually licensed for use from the OEMs. Basically, you will now have access to the same programming capabilities with ECMs that the OE dealerships have along with the major advantage over the dealer in that you won’t need the car to perform the programming (most dealerships cannot perform off-vehicle programming).

What is car flashing and programming?

Car Flashing and programming an engine’s computer keeps the vehicle’s engine control modules (ECMs) up-to-date. As what’s under the hood continues to become more complex, technicians need an easy diagnostics tool that lets them enable flashing and reprogramming right at the shop with live support from a factory-certified diagnostic technician.

Why does flashing a car's computer matter?

Why Car Flash Reprogramming Matters? In addition to updates, flashing a vehicle’s computer removes false engine codes and helps the engine run much more efficiently; drivers often see an increase in engine performance and improved gas mileage.

Why do independent repair shops end up outsourcing flashing and other repair jobs to dealerships?

Because the lack of OE-level resources, many independent repair shops end up outsourcing flashing and other repair jobs to dealerships. If that describes your business, you know that such situations cost you time and money. Not only do you lose the repair income, but the time spent towing the vehicle to the dealership eats up valuable manpower hours when other jobs could be taken care of.

Do every manufacturer has its own flash?

There’s also plenty of confusion over the cost to do a flash, as every manufacturer has its own system.

Is flashing easy for repair shops?

To date, flashing capabilities haven’t been easy for independent repair shops. It’s typically a time-consuming process. Cumbersome equipment is involved. Technicians don’t have the proper equipment, expertise or training to complete the service.

What happens after reprogramming a flash driver?

After the re-programming is completed, the flash driver is deleted from the RAM of the Bootloader

Why is firmware not mission critical?

The need for firmware or application update was not mission-critical, due to not-so-complex features and systems.

What is a flash bootloader?

The Flash Bootloader comprises of several device drivers and software modules for flashing the Automotive Control Unit. One of them is flash driver.

When Automotive Electronics was in its nascent stage, software engineers had not fully utilized the capabilities of?

When Automotive Electronics was in its nascent stage, software engineers had not fully utilized the capabilities of a Flash Bootloader software.

Why is my software image so large?

The software image (file that contains the updated version) may be large in size, or there may be a chance of flash drive corrupting the memory. There is also a possibility that the communication channel may not be secure enough, to support the re-programming.

Can an ECU be hacked?

The external ECU flashing tool communicates with the Bootloader over CAN bus. Hence, it is highly likely that the communication can be hacked and the entire ECU be re-produced.

Where is the flash driver loaded?

Instead, the flash driver is loaded inside the Flash Bootloader, only when the ECU reprogrammingcommand is sent by the external flashing tool.

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