Is anyone currently selling a cat-back 3" exhaust? Sorry if this is a repost, but i searched =/ and i wanted to do a custom one but no one in FL aparently does mandrel bent except 1 guy in miami lol.

 

JBP
Alter Atmosphere
and I think Vibrant

 

thanks!

 

CTI also makes one with downpipe and header.

 

do you guys have links?? this **** is impossible to find... other than the JBO one...

 

Sorry but it's not a downpipe...it's called a B Pipe. Downpipe refers to the part of the exhaust system that comes off a turbocharger.

 

Actually if you look at CTI site they call theres a DOWNPIPE. Look first.

http://www.customtubesinc.com/catalo...7d0e8968d3eed3

CTI exhaust link.

http://www.customtubesinc.com/catalo...7d0e8968d3eed3

 

I understand that but it's still improper terminology.

 

Wont a 3" exhaust give me the most power with a stage 2/intake?

 

bump

 

3" is good when u approach the 300hp area, with a stage 2 and intake ur not quite there yet, so ur better off with the 2.5"

 

What bout with all my mods...below

 

Vibrant was going to be 3" but they showed no increase in power (maybe even a decrease). last word they were testing 2.5 and 2.75" so we will see what they come up with.

 

you don't have to spool a turbo I'd say no need for 3in.

 

Agreed.

The less backpressure a turbocharger has, the easier and faster the turbine can spin.

 

^ exactly.... nobody on the site is pushing enough hp to benefit from a 3"

 

right now they arnt... but what happens when GM stage 3 comes out? or we are all putting on 2.6" pulley with 60lb injectors, tuned. Then we would have wished we had a 3" exhaust instead of having to upgrade an exhaust that you just bought a couple months ago...

 

It's more of a threat with 60#/2.5" pullies/tuned.. We've already got a few people doing it (At least 3) and so far so good from my understanding.

 

id rather have 3" but if its gonna hurt me ill go with 2.5" hmmm

 

CobaltBurst if you neeed i can get it made here probally today and shipped pm me and let me know

 

In my opinion, you guys really need to open up the exhaust ports to really take advantage of a 3" exhaust system.

 

what size is the stock exhaust pipeing

 

Part of it is 2 1/4"

 

Yup. I will keep you guys posted on developments as they come my way.

 

recently bulldog, cobaltsupercharged and I went to the grand am cup and it would appear that the cobalts were running stock exhaust. they were insanely quiet though and we couldn't figure out why as they were quieter than a stock ss. the only thing you could hear was the super charger as they passed us at 130+. That being said in even race applications it does not appear to have any benefit to go larger than a 2.5.