I agree. I just had some arh catless installed after destroyed convertors took out my boosted engine. The fitment is is flawless with not coming close to hitting anything causing false knock. That with a mbrp race cutback. It's loud asf
Yeah changed that and no difference. Only 5k miles on Long block from ford. Of course no warranty now. Put on a bigger blower got drunk and smoked em through 3 gears down the street so I might of really fd something up