Quote:
Originally Posted by Wavy
A little insight I learned the passed week reading on tunes on different BMW forums.
Even when you remove a piggyback, the dealer can look in the logs and see red flags of the higher than normal boost levels. So if they decided to look that deep, they can still deny warranty work. Whether the dealer even has time or would even care is a case by case type thing. I doubt most dealers would even snoop around the engine bay while doing routine maintenance.
Regarding my Racechip. It feels great. I have it at one step above the default. No jerkiness, no CEL, and it still feels natural. I won't be turning it up because 93 octane is very rare in L.A.
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Wavy, I am considering a racechip. How do you know which “step” is applicable to which configuration? Lots of info out there on JB4 but not so much on the newer RC like the GTS.