Can Mitsu track ECU changes?
#16
you can still tell you had something there. AND YES they can tell if you have been flashed, we had some engineers here a couple of weeks ago for 1 with a problem and that was the 1st thing they checked. they also showed us how to check ourselves.
#20
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lol.... i highly doubt they check unless you really messed your drivetrain realllyyy bad. or on the other hand they could check before they even see whats wrong with your car.. who knows really.
#21
Hi shyong--it's weneversleep who posted this over on that other forum.
I wasn't purposely "making **** up", and I'm glad you asked the experts here.
Is there a consensus? I'd like to know as well, because if I could get a conservative tune that would improve fuel economy, I might be interested.
--michael
I wasn't purposely "making **** up", and I'm glad you asked the experts here.
Is there a consensus? I'd like to know as well, because if I could get a conservative tune that would improve fuel economy, I might be interested.
--michael
Still waiting on one of the tuners to chime in.
#22
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The Calibration Verification Number (CVN) and Cal ID requests can determine if an ECU's software is currently modified. The CVN is a CARB-mandated item computed during the ECU's operation (it's not directly hard-coded). If an ECU is flashed back to stock, the CVN and Cal IDs are once again as expected. We don't recommend faking those numbers.
#23
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^^wow...
well if you wanted to do a piggy back without tapping the wiring harness you could just buy a harness extension and tap into that....that way you save your ECU and your wiring harness.
well if you wanted to do a piggy back without tapping the wiring harness you could just buy a harness extension and tap into that....that way you save your ECU and your wiring harness.
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#28
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The Calibration Verification Number (CVN) and Cal ID requests can determine if an ECU's software is currently modified. The CVN is a CARB-mandated item computed during the ECU's operation (it's not directly hard-coded). If an ECU is flashed back to stock, the CVN and Cal IDs are once again as expected. We don't recommend faking those numbers.
People, you have to use intelligence. ANY modification to the ECU's parameters would cause instant engine and drivetrain warranty voiding upon discovery. It doesn't matter what you use or how sneaky you think you are. My recommendation is to find out if your dealership is mod friendly. If not, you have to be willing to pay to play. The burden of repairing a modified car that results in engine damage due to misuse or any other reason is NOT the responsibility of the manufacturer. Expecting them to cover it is asinine, and concocting ways to trick the dealership is dishonest.
Talk to the service manager first. You'll get a better picture of how they operate that way.
#29
Which one is the truth? That the Sum Count can't be changed and indicates to anyone looking that the ECU has been flashed x number of times which can be compared to Mitsu's record of factory flashes, or that the CVN and Cal ID can be reset back to where they were? The two that you quoted seem to speak to different issues and only the first is specific to this question, right? It's a simple question. If the sum count is the same as on most other OEM ECUs then they can tell that it has been modified at one time, correct?
Last edited by JWA; Oct 5, 2008 at 07:29 AM.
#30
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Which one is the truth? That the Sum Count can't be changed and indicates to anyone looking that the ECU has been flashed x number of times which can be compared to Mitsu's record of factory flashes, or that the CVN and Cal ID can be reset back to where they were? The two that you quoted seem to speak to different issues and only the first is specific to this question, right? It's a simple question. If the sum count is the same as on most other OEM ECUs then they can tell that it has been modified at one time, correct?
1) The CVN and Cal ID are not points raised when the ECU is flashed back to stock.
2) The sum count is still in place. The sum count will also change when the factory flashes the car.
But to say that #2 is a valid point, you have to provide proof. How many documented voids of engine warranties do we have on the 1-9 forums of the previous generation CT9A cars based solely on sum count? The sum count cannot be used as the end all punch line in the argument if it is not checked in every driveline warranty claim.
On the flip side, I can tell you this: No mod is ever completely invisible. If you go to a non mod friendly dealer with a blown engine , they will look for any and every reason to understand why the damage occurred. Some have even used forum posts as evidence. Scary stuff.