hey i was wandering if anyone has installed or even heard anything about a QTEC exhaust and what you thoughts were on it? Thanks.

 

oh sorry and here is a link to where i found it at
http://www.pfyc.com/store/merchant.m...ory_Code=CBEXH

 

30 hp gain on a WRX?

Looks fishy to me.

 

i would guess the gains are higher on boosted cars

 

my good friend has one on his del sol and let just say with minor stuff done including a cut out he can beat the stock ss/sc

 

https://www.cobaltss.net/forums/show...ht=exhaust+cut


I would definitely get this if you want instant power! Close for street, open for racing.

 

so would you say its an easy way for hp gain and more sound?

 

why did you put a NWS! icon on your title?

REMOVED.

 

my bad didnt mean to do the nws thingy

 

lol the delsol runs 17's stock, it doesnt have MINOR things done to it....

but give the exhaust a shot and let us know

 

i wanna see results!

 

ok i dont care what they run stock i know what hes got and he can run high 13s with what hes got.

 

you talking about the black one with gold wheels?

 

yeah my boy dustin. i know i know he did the engine swap but he still only has intake and exhaust on it.

 

30hp gain on a WRX is pretty normal.... turbo cars get massive gains from free flowing exhausts... but as we know... turbo cars an N/A cars are vastly different... I'd expect 5-10hp from a cat back system...

 

and drag tires, and gutted interior!

 

i really don't see that cutout helping you out at all...you are not going to benefit from just dumping the exhaust after the header. maybe if you were turbocharged...

 

i think it will cool your engine down and make it work less to push out the exhaust

a benefit of it is that if you drive to a girls house and her parents are outside awaiting your arrival, they wont judge you on your fart cannon because you can "turn it off" when they are in ear reach

 

It's possible...

Having an cutout pretty much makes a huge exhaust leak, which gets rid of backpressure. The less back pressure, the easier the turbine can spin and you can actually gain alot of power on a turbocharged vehicle that way.

 

Unless he's boosted, I doubt it's helping.

 

You're thinking in the opposite direction...

No matter what, exhaust will come out of your motor in result of the "explosions" in your combustion chamber. It's going to be hot no matter what you do to your exhaust system and cooling the exhaust gas is pointless because it's basically motor waste.

Cooling is dealt with the intake side of your motor (air coming in).

If he had this on his n/a car, it will be ungodly loud...yes, louder than a "fart cannon".

 

Moral of the thread...

It won't benefit you if you're naturally aspirated...it can actually hurt your performance. N/A cars need backpressure, having a huge exhaust leak (which is what a cut out makes your exhaust have) will result in extremely little backpressure and that will just hurt you in performance. It's geared towards vehicles that are boosted (more so turbocharged vehicles) or vehicles that are pushing a high exhaust velocity...if you notice, the examples on that page, all of the vehicles listed are turbocharged or using V8s.

 

Yes,True...most of the people that I know have them are running 12's or better, some turbo, supercharged, and v-8's. All gained a significant amount of power from the cut-out all dyno proven. Futral motorspors dynoed a 2005 RL with ONLY a cut-out and it gained 8hp/10tq for $150 that increases hptq as you upgrade. With a cut-out and mods such as intake, pully, header the hp/tq #'s will increase since everything is flowing so nice and smooth. If things go as planned some dyno proven increased numbers will be out shortly.

 

when about those who are spray n2o? would gains be seen then?