No. Once you tune it the BCM stores a code (P1400) that stays in memory and, should a significant drivetrain repair become necessary that P1400 code is going to be the reason Mopar denies your warranty claim. You can put things back to stock all you want but the code will still be there. Mopar will not approve any significant drivetrain repair without a full data dump and that's where they'll see it.If I were to install it and tuned it would I be able to go back without screwing up my warranty?
You cannot swap back and forth because the Vin# and exact mileage are required to get an unlocked PCM and that mileage changes as you drive and add miles to it. The catch is there is more than one computer on board that keeps track of the cars mileage and if that mileage does not match, the car is automatically red flagged.exactly what dan said. yes, your warranty would be shot. if you got a 2nd pcm that was modified, do you really want to go through the hassle of installing and then removing the unit every time you went in to the dealer?
There are many things you can do to your Scat without tossing your warranty out of the window on a brand new car, changing the PCM to tune it, is not one of them, think this over very carefully! RyI'm wondering where is the best place to order a new unlocked PCM for my 2022?
If I were to install it and tuned it would I be able to go back without screwing up my warranty? Even if I have to wait for my warranty to run out I know things get more expensive with time so I still want one. I plan to keep this car forever.
i hadn't even considered that. thanks ry!!You cannot swap back and forth because the Vin# and exact mileage are required to get an unlocked PCM and that mileage changes as you drive and add miles to it. The catch is there is more than one computer on board that keeps track of the cars mileage and if that mileage does not match, the car is automatically red flagged.
Yes, if otherwise all you had was, for example, a 93 tune and no physical modifications.exactly what dan said. yes, your warranty would be shot. if you got a 2nd pcm that was modified, do you really want to go through the hassle of installing and then removing the unit every time you went in to the dealer?
Actually, it is not possible to simply switch back to stock ECM and go undetected. Once ECM is changed for any reason a P1400 code is locked into the BCM and cannot be unlocked by anyone, not even dodge but it's info can be read. ECM can go bad and a new one required. It will still throw a P1400 code but service records will substantial change and warranty remains intact. Unlocked ECM will be noted in P1400 code thrown by BCM even with stock ECM in place of unlocked one so warranty will be lost with either ECM in place.Yes, if otherwise all you had was, for example, a 93 tune and no physical modifications.
That way, you switch back to your OEM PCM when going to the dealer for routine maintenance. That way, (1) if they scan your car via OBDII port, it will (on the surface) read as factory, and (2) if they flash your unit without your knowledge, at least they won't be messing up your tune and/or brick your modified PCM.
It only takes a few minutes to switch PCMs, and well worth the effort to protect the nearly $1,000 spent on a cracked PCM and tune.
Never claimed you'd go undetected switching ECMs. However, I do believe pre-2018 6.4L did not register a code in the BCM when the PCM's were switched.Actually, it is not possible to simply switch back to stock ECM and go undetected. Once ECM is changed for any reason a P1400 code is locked into the BCM and cannot be unlocked by anyone, not even dodge but it's info can be read. ECM can go bad and a new one required. It will still throw a P1400 code but service records will substantial change and warranty remains intact. Unlocked ECM will be noted in P1400 code thrown by BCM even with stock ECM in place of unlocked one so warranty will be lost with either ECM in place.
Correct in that 2018 was the first year for revised BCM. Misunderstood your reasoning. One way for guaranteed protection for sure. Thanks for the clarification.Never claimed you'd go undetected switching ECMs. However, I do believe pre-2018 6.4L did not register a code in the BCM when the PCM's were switched.
Regardless, my suggestion for switching PCMs (a/k/a ECM) wasn't to pull one over on the dealer, but rather to protect the investment in the cracked PCM and the tune, by eliminating the chance the dealer flashes the PCM unbeknownst to the car owner. A dealer flashing a cracked PCM is a surefire way to brick it.