Ive been wondering what catted dp makes the most power
also been wondering what cat-back makes the most power

I was thinking about these 3:
Vishnu Stage 1
Helix Catted DP + HKS Ti Cat-Back
Helix Catted DP + JIC Ti Cat-Back

or you guys can post up anything else that you think might make some power

can anyone help me out?

Thanks!

 

there was a chart floating around a while back from Turbo magazine that compared alot of the popular cat-backs on the WRX for sound/power/price, but when it comes to many ofthe good 3" straight through design cat-backs the difference is going to be so minimal your better off taking the other aspects into consideration(sound. price, appearance) in your decision making, just MHO

as for catted DPs, I would strongly advise finding one that incorporates a metal-substrate core instead of the older style ceramic substrate core. Ceramic substrate were great for the last twenty years but the new metal substrates are much more efficient and flow much better than the old ceramics, though they are a bit mor eexpensive.

the catted DP I like the best is the Helix, usually sells for about $400 with metal substrate cat, best for the money, again IMHO!

 

After my ECUTeck reflash my STi w/APS 3" TBE, the dyno registered a total 40WHP gain (over stock 218whp) on the first or second run after the reflash...I had to rush off the dyno, so no more tuning has been done yet. More HP should be gained after driving around for a few days and maybe a little more tweaking on the dyno.

Jason

 

I think this was the chart that you were looking for http://www.turbomagazine.com/tech/0212tur_exhaust/

 

I bought the Invidia DP and Cat Back combo and it is very well built. Looks bad azz and has the very best exhaust sound I've heard on any WRX or STI no BS. ScoobyTuner.com has pics. under the DP section.

 

Great info, thanks for posting. I have been doing research on exhaust and this is a BIG help. I saved it as a favorite.