bpang1

iTrader: (25)

OK so I threw on one of my friend's stock STi axle-backs on my otherwise stock car because I like the tip and am wondering if I can use the Accessport Stage 2 map if I have a Helix UP, DP and that exhaust.

Probably not but I just wanted to see if it was almost viable because I like the look and the only other close one to that is the Borla WRX Cat Back with single tip.

I primarily want to go stage 2 because of the CEL deletes and extra power.

bpang1

iTrader: (25)

Bump

IDAFC21

all you TECHNICALLY need to run stage 2 is an aftermarket downpipe. so if you do have a helix up/down pipe w/ the sti exhaust, that would be fine for running stage 2. you could probably squeeze a little more power out of an aftermarket exhaust, but as far as requirements go for stage 2 youre good to go.

btw, ive got the full helix exhaust, LOVE it

bpang1

iTrader: (25)

Yeah that's what I was hoping because of the fact that factory vs. stock cat-backs don't make a huge difference on other cars on the dyno anymore.

I guess it's because the OEMs are learning more about maximizing flow and minimizing noise. However, I guess it would make more of a difference if my car had a bigger turbo, more boost etc.

Hopefully it shouldn't be a big deal in my proposed setup.

ryanjorunner

You can definetly go with stage 2. Cobb says all you need is an aftermarket DP. you have that and more so go for it.