X-Pipes ?

got it on the Austin issue:D....one thing I did not see clarified on this thread was whether or not Roger's intake kit added HP....any thoughts? thanks guys, Randy

RxHadden,
If by intake system, you are speaking of the EIS, I was at the dyno session when the dynos were run pre and post installation of the EIS. The dyno showed about 10 rwhp gain with the EIS. I'm not sure if Roger is making any claim about any increased HP, but I was there and saw it myself.

Malcolm, you will love them!

I actually installed my first Xpipe on my S4 way back when Motorsports first developed them and Dave was shipping direct. I then was involved in much experimentation with the cat back system/resonators/rear muffler and RMB.

This latest system is for my GTS that is completely stock but not for long

malcolm;12938 wrote: no worries Austin........just want to be clear for the OP

Another part of the X pipe discussion is what to use after the X. On my S4 I have the small/GT type resonators that when fitted with an X pipe/sans cats and a RMB was too loud.........set off car alarms when decellerating in the city. I swapped out the RMB to the OEM rear muffler but that was too quiet so went with a GT rear muffler.......perfect

funny, my car sets off alarms everywhere and its stock. not even loud, at least compared to other V8's in the neighborhood. i'll be looking into xpipes next year though.