[QUOTE=wanker;3215559]
Quote:
Originally Posted by Ĉon
Please explain?
Explain? Test pipes eliminate the catalytic convertor, so there is no emission control. Test pipes are intended purely for track purposes.
I realize modding is fun and we're all looking for more HP, but simply Google LA smog photos from the 50s to appreciate why catalytic convertors are a good thing.
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It is my understanding that test pipes also allow your exhaust to have a pretty fowl smell while the HFCs still clean things up?
So, even if you aren't too concerned with the world heath in general, you might care if your ride stinks?
Anyway, I have the Berk HFCs and Stillen Gen3 intake and it seems to give good flow and a nice sound bump up front as well as in back. The intake growls and the cats hiss a bit...the car just sounds a little pissed off...in a good way.
Have fun with your new Z!