e63 QUESTIONS
for example if you have a cracked header and they see you dont have secondary cats they can deny warranty. on the other hand if your PS pump goes bad and they see you dont have cats they cannot link the failuer to the absence of cats and hence will honor the warranty.
Do not remove the resonators and the cats u will lose alot of low end performance .
Tune the car and do a power pully for now . Drop exhaust and gut the rear cats but keep them there for the visual .
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