Replaces the restrictive factory catalytic converters with much less restrictive straight-through pipes for maximum flow and performance
DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
just installed 2nd cat delete this morning at my 957ctt...throttle response at low rpm without sport is almost as with sport before...great difference in spooling...car is way better within city roads...sound is deep and good without drone and annoying rattles...however i really cant tell (much) of a difference at high rpm so far...maybe some adaptation is needed...overall quite happy...i would suggest it definitively...”
Excellent workmanship and quality on the secondary cat bypass pipes for my 2009 cayenne turbo s. They sound great without being too over bearing. Im about to order the x pipe muffler bypass for my 2011 Carrera s.
Fabspeed secondary cat deletes were well worth the 6 week wait. Craftsmanship was superb as was the fit. Sound is noticeably more throaty than stock but yet not over-the-top. Also noticed better throttle response. Very happy with the purchase. Only downside was the lack of install instructions/tips. Overall install was straight forward minus one flange bolt on the passenger side (had to be removed using a serious of wobble socket extensions from the engine bay).