Quote:
Originally Posted by Powerslide
Exactly - if the power increase is enough to justify the cost - having the peace of mind of a warranty is huge... I've heard several horror stories on this forum of warranty claims being denied on tuned cars by BMW NA even though the dealership itself had not denied the claims (apparently BMW's software as used by BMW NA can detect evidence of tuning - at least in some instances - even though the dealership's service department itself cannot detect evidence of tuning)...
Even though it sounds like most of the times tuned cars are not detected where the owner removes the piggybacked hardware before going in for service - I would not want to chance being one of the "unlucky few."
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Quote:
Originally Posted by Keto
I would 100% buy a BMW-backed upgrade. I'm slightly nervous about Dinan, and far more nervous about the various JB4, etc tunes.
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Yeah, that JB4 stuff seems like financial suicide should the slightest thing go wrong with your car.
