Thread: Z4 Coupe (E86) Rogue Engineering cat-back exhaust
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Old 02-02-2013, 08:26 PM
Alexchaunt Alexchaunt is offline
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Location: Los Angeles
Join Date: Feb 2013
Posts: 1
Mein Auto: Z4M Coupe
Rogue Engineering cat-back exhaust

Hi guys. Have just bought and installed a Rogue Engineering X pipe and mufflers on my z4 mcoupe. Build quality is top notch and fitting was no problem. However while there is no drone to speak of on the freeway there is a really irritating drone/resonance between 1800 -2300 rpm especially on partial throttle. Wondering if anyone else has experienced this? Cheers, Alex
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