ok so I noticed that some but not to many cobalt’s out there have a dual out let exhaust but most if not all the time have the HUGE fart cans for the set up.. I have a muffler delete and its only about a 3'' outlet and I was thinking if I kept it around that size and have a dual outlet exhaust done it wouldn’t look nor sound bad.

Any one here have any thoughts??? thanx

 

On a LT? It may hurt you more in the HP department

 

ok thats what i was wondering cause the Y pipe would be put in almost at the very end of the exhaust. also one more question going catless and have a header would also hurt in the HP zone? basicly straight piped with a header ;p

 

U drive a base model and ur name is ss? Lol. Ur exhaust is mad fail.

I also find it hard to believe u have 171 hp in a stock 2.2 with a strait pipe

 

Yes, your car would lose all back pressure. Which is bad on a NA car.

 

i dont have a str8 pipe ;p all i got is a cat back and a drop in filter. also i never said the 171 hp was to the wheels.

 

Lol.. 20 horse from a drop in filter and catback Haha

 

im getting duals fabbed up for my ss/tc when i go home in march from iraq. i have teh monies and everything. so now its just a waiting game. lolz. its only for the looks tho, i dont expect gains out of it. just gunna fab up a Y pipe and weld it in.

 

i had dual exhust i custom fabricated italso sounded sweet made good power

 

This may be a very noob like question but I am trying to learn as much as I can about the different upgrades or performance parts for the cobalt. But why would putting a dual outlet exhaust hurt a N/A engine? How does it rob it of HP? Would a dual outlet exhaust have any negative/positive effect on a Forced induction engine?

I just got my 2nd cobalt, my first one was totaled in an accident and I am more interested in performance upgrades this time around. I couldn't find a cheapish SS around me, actually there wern't many in my area to begin with so I settle for a 2009 Cobalt Coupe LT. Basically all the questions I asked are directed towards the LAP(2009 cobalt correct?) engine.

 

I dont know if they are necessarily talking about the dual exhaust but the 3" on a N/A car (especially a cobalt) is bad because the car would have very little backpressure if any at all which can rob your car of torque in the low rpms and may rob your car of horsepower at higher rpms. And personally i think the only cars that should have a dual exhaust is any car that has a v8 or bigger displacement engine.

 

I completely agree with 06_cobalt. for instance, my fancy dancy truck i got for six hundred bucks which now has a small block v 8 should have 3 inch exhaust true duals. ( oh noes I does has it) with two cherry bombs, one for each side. but a cobalt, that's a no go. there's no real need other than looks to put dual outlet exhaust on a cobalt.

 

Dual exhaust = loose power
loose power = loosing races
loosing races = bad reputation
bad reputation = dual exhaust

Its all about logic

I did some Enstein lmao

or is it someone else xD idont know

 

I wouldn't quite call that Einstein..

 

Thank you for showing my errors but i dont see where being lazy, or for you "errors", count as not being Einstein!?

And I didnt say i was him, just said i did some logic and he was good at it.

But oh well haters will stay haters haha

 

if you install it as an 'h' angle I don't see it hurting performance that much if you put the parts you took off back on..

 

i have a drop in and i still feel like a lawn mower. what brand did you use please let me know???

 

for a car with only one possible way to exit exhaust, dual pipes wont really gain you anything. The only time when it does is if you run a v6 v8 or v10 or v 12 motor, an inline motor wont gain from a dual exhaust. and when you run a v motor, what you're looking for is where to put the h pipe to cross between the two exhausts, at that calculated point you will gain the most power per pipe. If you're running an inline motor with only one pipe coming out, then you have no reason to split it into two pipes other than looks. I did all the research on this topic a couple months back when i put dual exhaust on my truck.