View Single Post
      11-29-2021, 04:25 PM   #87
SoCalDodgy
New Member
13
Rep
12
Posts

Drives: M2C & MINI R56S
Join Date: Dec 2019
Location: SoCal

iTrader: (0)

Quote:
Originally Posted by IllSic_Design View Post
That NM tune or whatever looks like a piggyback, which if it is then that doesn't affect the CVN/checksum as it is still using the OEM tune, just fudging the input/output numbers or however they do it. Flash tunes are where you have to worry about the CVN/check sums
Sorry. You're right, I should've been clearer: it's not a piggy back, but a bench tune where the ECU was pulled from the car for the update. No extra hardware, not a piggyback tricking the car into making more boost based on tweaking the sensor input. They claim the checksums match--it's also been out there for a while, and maybe was picked up as an OK variant by the DMV? Just guessing here and throwing out one more data point for what it's worth.
Appreciate 2