yea im gonna thanks and do they tune it tooo and where is the best place to buy the kit online

 

http://www.crateenginedepot.com/stor...P1540C196.aspx

 

thnaks so thats what 3.0 inch Pulley Shortend Belt and 42.5 lbs

 

agreed

 

Yes. That kit comes with a code that the dealer needs so it can reflash your computer.

 

So No Dyno Tune Just A Reflash And Im Good

 

correct ... dyno tunning doesn't hurt though

 

Owwww...exhaust theory...fun. I think my dad's 400hp trailblazer SS has a 3" exhaust. Like many people said, too big for a 4-cylinder for a few reasons.

If people want more information regarding exhaust sizing, check out the following article, it's an interesting read and it makes a lot of sense. Pay particular attention to the "Pipe Sizing" section and read why bigger is not necessarily better (but only in this case!)

http://www.nsxprime.com/FAQ/Miscella...austtheory.htm

Happy reading!

 

For engines making 250 to 350 horsepower, the generally accepted pipe diameter is 3 to 3.5 inches.

 

thats bs, 3.5 is like a damn school bus exhaust

 

Don't look at me. I pulled it from that site

 

i didnt say you i was saying about that site

 

That exhaust article was written by Ricers who put 4" exhausts on their 100hp engines. Cobalts don't need anything over 2 1/4" Take a close look at the stock exhaust manifold, i's no bigger than 1.75" and the stock downpipe is no bigger than 2.00" at the start. Even if you buy the Pacesetter header, the opening at the collecter of the ball is 2 1/4", although the collecter is a 3". So the only way to enjoy the benefits of a 3" exhaust is to have ported heads, custom header, custom 3" downpipe, at least 400hp and then the 3" catback exhaust.

Just my 2 cents

 

I'm gonna put a 3" on my 2.2...and set fuel cutoff at 5K.

 

******* n00b...set it at 4k and you'll be SCREAMING down the highway....slowly LOL

 

HAHAHAH

and while we're at it everyone should throw some apc stickers on .. that'll make it so all of our cars are ready for a 3" exhaust... well be pushing out all tens of horsepowers and we all need triple decker wings then we might need to go 3.5 or 4 in

(no offense to the OP intended)

 

Ok alittle of topic but what size setuup would be the best, as in down pipe exhaust header ect..

for maximum power

 

what kind of power are you looking to make is something to take into consideration.. do you want High end. low end or what?there's usually no be all to end all solution unfortunately

 

Any other performance mods than this CatBack ?

 

Ugh....bigger is not always better. Exhaust systems are designed to get exhaust the **** out of your car and away from you. You have to find that critical point between getting the exhaust out as quickly as possible while it's still HOT (hot = less dense) and having a pipe large enough to facilitate this without letting the exhaust cool down so much that the exhaust becomes less dense and does not flow out.

What's the mystery here? Too big means exhaust is not rushing out due to a confined space which means that the exhaust cools too much which is not good for performance.