ive posted this on another thred but theres no reply so im hoping that i get more here than the other...back to the point. im thinking of getting a qtp downpipe for my stock car..or should i just get a full exhaust instead....thanks for the help

 

I have it on my evo 9. 30+hp gain when open, stock noise level when closed.
PM me if you want to check it out in person.

 

When u tuned it u tuned it in close or open?

 

open. closed shouldn't matter as it's there for the "stealth factor" and you wouldn't be tracking it closed

 

that is true...ill c...cuz u dnt see that much people with that dwnpipe

 

I gained 41whp from it going from closed to open. Boost went up about 3psi just from opening it too.

 

I got one for sale but its DC sport downpipe with DMH cut out.

 

can u post some pics

 

Why not go with an O2 dump? Best mod I have done to my car besides E85...Completely quiet until your WOT

 

I love mine... I have a 3" dp with QTP cutout right where the stock cat used to be, it is perfectly "stock" quiet when closed... extra angry when open! the best of both worlds! I had a 3" helix before and it was always pretty loud and drawing attention... now I make 700+ hp and sound stock!!!

Love it!

Did I mention I love it!

 

Im wondering after the downpipe, from cat to exhaust is it stock or u guys got a aftermarket

 

PM you with a couple pictures.

 

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