Rich997:
Hey BlackSparrow!
Nice to see someone else from Mtl on Rennteam :)
I bought my cayenne at Lauzon and they are recommending installing secondary catbypass to replace the unneccessary second set of catalytic converters. It's supposed to improve sound and give a little more power. They were really cool because I was ready to go all out and get the complete exhaust system but they said it wasn't really worth it, Catbypass should be enough according to them. Warranty will still be 100% :)
i'm getting them installed this week and will let you know how it works out!
thanks to everybody that answered my post, it really helped and I appreciate it!
RS
https://www.fabspeed.com/958_cayenne_3.html
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Rich 2010 GT3 RS Grey Black/Gold 2009 Cayenne GTS Black/Black
Said who? Your Porsche dealer? If so, get it black on white. Since you are changing the backpressure, Porsche could always find an explenation why the engine broke down or the turbo chargers were damaged, etc....just saying.
If your local Porsche dealer doesn't back you up on such mods, you're toast in case something happens. How can they find out? After each serious engine damage, Porsche requests an ECU readout print. This cannot be faked or changed.
So while I understand why you did what you did (the Cayenne Turbo really doesn't sound too great), you should be aware that the warranty will be affected, unless your dealer backs you on this one.
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RC (Germany) - Rennteam Editor Porsche Panamera Turbo S, Cayenne GTS (958), BMW X3 35d (2012), Mini Cooper S Countryman All4