Nice!!!!

No need to. The the burden of proof that a modification was/is the cause of the failure. And a tune doesn�t have to leave a foot print, much less it�s even harder to prove beyond a reasonable doubt that a tune is the cause of any specific drivetrain failure.

EFI live as a consumer product dosent leave a foot print. Calibrated power solutions; duramax tuner does, for example, even though they use EFILive. But that is because the lock the tune files. This dosent lock the ECM/PCM. Dealership scanning equipment dosent have the ability to look at what is the desired operating parameters and the look up tables for corrections. All OBD 2 diagnostic scanners that have the most ability can live stream view a limited number, or field of view, of what the desired operating parameters are, and what the actual data is, of the specific system(s) that the scanner has the ability to monitor. The only thing the �lock� does is keep other persons or companies from downloading the �tuned� files and selling/using them as their own;pirating the tune. And the lock is nothing more than a password protected file. Some of the larger, plug and play uploadable tuners leave a finger print, but it�s typically 1-2 characters different in the name of the files than the factory files. Once more, it�s easily over written by nothing more than a reflash; you upload a $400 tune file on to your truck. The manufacturer comes out with a software update for, say the on board compass. You take it in, they upload the up date and you drive away wondering what happed to your power. The update they flashed on to your computer isn�t just one line of code for just that one thing. It�s not that easy. Doing that can and has corrupted ECM/PCMs in the past. So now they completely re-write the whole file, though everything is the same but for that one part that is now updated. And again, in court, your going to be hard pressed to prove that because I put a cold air intake, full exhaust system and reflashed my computer my transmission snapped the input shaft, for example. � Is Said Input shaft is rated for XYZ LB/FT of torque, Mr. engineer?� �So please explain to the court how this engine, with the modifications (invert dealer name or manufacturer here) states it has, produced ABC LB/FT of torque repeatedly on an engine dyno, witch is less than the rated capacity of the inputshaft, caused the input shaft to fail?� Is about how most of those cases will and have gone. Dealership/manufacturer flips the bill for all the legal fees, diagnostic and investigations involved, and makes the repair to the vehicle. Most places will try to bully you around. Push back and I bet they bow out and get you squared away. This is why you see more and more manufacturers selling their own aftermarket parts. If that can�t void the warranty and make you pay for repairs, they can offer you the parts you want and/or are going to by anyways. And at the end of the day, they want to make money, not lose it.

I know for a FACT I�ve SEEN, working at multiple GM dealers, that there this is more so a poor choice of tuner.

Again, sure, if you use a banks bully dog GT tuner, it�s going to leave its mark, much less the fact that there is an aftermarket display, aftermarket wire harness and aftermarket/external module that is visibly and physically there.

In the case you stated above, there was way more to it than JUST a tuner on that engine to cause that kind of damage to the engine, especially a 6.7; the connecting rod are huge. JUST a tuner engine failure is going to be EGT/combustion heat related and/or cylinder pressure related; melted pistons/rings/turbo, head gasket failure, things like that. This is from advancing injection trimming to far advanced, injecting way to much fuel, increasing boost pressures to much. That kind of failure, if the result of engine modifications, a significant increase in fueling and air flow while allowing the engine to over speed while injection timing is being advanced way to far. IE; propane injection with nitrous on a tune that will let the engine rev past red line, or over fueling it while past redline. Ether way, that customer was an idiot.

I have personally wittiness push back from ford and GM about tuned vehicles and warranty work. Most of the time, the warranty is honored. I also have personally witnessed I can�t count how many vehicles go in to the dealership with tunes and other aftermarket upgrades for drivetrain warranty work and no one says a word about the performance goodies. In the end, don�t be an idiot with upgrades; run 48� IROKs on a stock transmission and transfer case and try to make 1K HP with out ever upgrading the engine internals and expect the truck to be a daily driver and think the manufacturer is going to honor the warranty.