Quote:
Originally Posted by MakeEmDrool
i could have swore there's no shortage of N55 chips out there...perhaps there are, but they are all doomed to fail
aside from that though, what about chips that you can change back to factory settings for service - then return to the performance setting afterward - wouldn't those at least theoretically defeat the evil mother ship?
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With some of the piggybacks you can (likely) avoid the dealer finding any suspicious codes if you remove them before service and erase all codes via an aftermarket scan tool. However there're also hidden (shadow) codes which may not be as easily erased.
Also be aware many dealer have been given out incentives to their techs to look for physical evidence of piggybacks/chips via visual inspect of the DME housing / cable splicing etc . Also you have to be aware that if an area rep looks at your car for any warranty claims and finds sign of modifications to the engine (sw/hw) they will likely void the warranty on the engine and related components (sometimes they have also voided full pump claims etc). Another possible issue is that BMW FS might make you buy out your lease as the car is no longer under manufacturer warranty (this also applies to Dinan tuned cars as they can't be "un"-Dinan'd) .
if you don't have a good relationship with your dealer running with a tune or downpipes, larger intercooler etc is in my opinion not worth the risk.
Especially as BMW is adding more and more detection capabilities into their sw it's just a matter of time until you run into issues.