Porsche Cayenne 957 Turbo Secondary Bypass 2.5" Tube (957 CTT - 2007-2010) for Sale


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Price: $475.00

NOW AVAILABLE IN STOCK! Hanksville Hot Rods is pleased to offer our newly redesignedsecondary cat bypass for the 957 (2007-2010) Cayenne Turbo and Turbo S. The stock Porsche Cayenne has 2 sets of (4 total) catalytic converters and this bypass removes the rear set of cats (you will still have one full set remaining on the car) to increase HP/TQ, sound levels by a marginal amount and provide incremental weight savings.

This new design provides much more clearance over the crossmember, and a more exact fit for the hangers.

We hand manufacture our own bypasses in Denver, Colorado. The tubing, flange, and 4 adjustable hangers are made from 304 stainless steel with a matte brushed finish. We utilize a 2.5" tube which mates up to the factory down pipe, then to the factory exhaust. For the Turbo models, our flanges are made from 3/8"-thick stainless steel, CAD-designed to match factory specs, are precision water jet cut. Our bypass incorporates 4 independently-adjustable stainless hangers. We have consistently offered our bypasses with hangers, but decided to transition to adjustable hangers to eliminate any fitment issues and to allow consumers to adjust their bypass clearance as the exhaust sags over time. In addition, we have realized how important the role of hangers are in supporting the midsection of the exhaust. While the bypasses are considerably lighter than the factory cats, hangers are mandatory because the factory downpipes are flexible braided stainless steel and are not designed to be weight bearing. Adding bypasses without hangers will eventually damage the factory downpipes.

Bypass pipes will provide a power increase in the low-end and mid-range power band on a CTT and most importantly allow the turbos to spool significantly quicker. This product will provide significant power peak gains after an ECU tune. It is a noticeable difference and you will feel the difference the first time you drive with them installed.

We believe this is a DIY project for anyone capable of operating a wrench. We provide detailed instructions, needed hardware and copper gaskets. This project is estimated at 90 to 120 minutes for the first-timers. It’s a 60-minute project once you’re comfortable with the process.

Please feel free to message me via eBay if you have any questions. Thank you! -Hank


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