Quote:
Originally Posted by onfireX5
I would not worry about warranty unless you start removing catalytic converters.
PM Quickburn. He did that mod and loves it.
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So I installed the sport exhaust and then had a custom X pipe made
Using a shop with a mandrel bending machine and 304 stainless steel.
I also think the pipes are different on the
Sport exhaust not just the resonator which I deleted.
I paid $1900 for the sport exhaust and $430 for the custom x pipe.
The sound is a bit deeper at idle and much much louder at startup
In efficient mode is about the same as stock from what I remember ( mine was stick for only 2 days)
In sport plus you do hear the difference and with my sunroof open it’s night ab day. Really worth the $.