Quote:
Originally Posted by Tyga11
Can BMW tell if you've had JB4 installed?
I'm honestly not sure. I haven't heard them on any of the previous generation models. I think it sounds pretty good on the YT video that's out there...
Do you want to be the guinea pig?  |
BMW doesn't know what you installed or what tune you have done. They just look at the peak HP, Boost, MPH, Acceleration numbers, and several other parameters that are logged by the ecu. If you surpass those stock parameters, they know you have done something to make the car faster, thus voiding the warranty (if BMW decides to do so).