npxboy

"Bolts directly to your stock catalytic converter. Note: This system will NOT work with the TurboXS downpipe and cat/mid-pipe. It is designed for the stock downpipe/cat section"

This really sucks maens cuz the TurboXS downpipe just so happens to be the DP i was about to get but i dont think this is true if anybody can give me any information going against this like someone that has the Blitz NUR spec with an aftermarket down. oh yea i got this info from www.fastwrx.com

oldmansan

iTrader: (4)

doesn't work with the TurboXS. I have a Godspeed downpipe and the Blitz NurSpec Racing catback. No cel with the downpipe, period. And that's without having to buy an additional "fix".

San

qwk_wrx

iTrader: (4)

If you have not bought parts yet....get a Turbo XS stealth back and a blitz nur spec axle back...bolts up real nice and plus TX-s is great quality....

all for relatively the same price but better DP....

oldmansan

iTrader: (4)

massive hp, the downpipe will not be the restriction. Dan from Godspeed had 390 whp from a WRX with the same downpipe. I doubt you'll be reaching this level soon. As stated before, no cel with this downpipe. Not sure if TurboXS needs a fix. My $0.02, mileage varies.

San

Choku Dori

iTrader: (2)

You can always consider Helix. I've heard plenty of good reviews on it.

Darknight

I think Turboxs is selling their downpipe with a catback adapter pipe so you can use it with an aftermarket exhaust.

iLoqin

iTrader: (5)

Helix has a bellmouth, but I think the only argument is the torque at low rpm with a smaller tubing. But if you're lookin' to push hard, I'd go Helix DP since it's a full bellmouth and lets all the air just go straight through.