Will the XTC downpipe fit my cobalt SS with no problem if i have a stock header and the GMPP Catback exhaust? The flex section on my downpipe broke and it sounds like ****, so this is a hopeful replacement. Should it work?

 

i have it and ive had no problem with fitment or anything but your prolly gonna need a an angled 02 simulator if you dont want a cel

 

Your bolting up to different stuff tho and what is this simulator?

 

pretty much pulls the o2 sensor out of the downpipe since the xtc downpipe uses highflo cat your o2 sensor is going to throw a code

 

no issues.

worked on my stock and works on my C/A v1 header.

it will throw a code 3-5 days after install. p0420. not a code to worry about. i've been running it for 3 years

 

I ran that exact setup, stock manifold and GMPP catback with an XTC 3" dp. Only problem was the flange on the DP exit was too big for the catback, I kept blowing gaskets until I got a copper one. A 2.5" shouldn't have that problem though.

 

Ok and where do i get one of these o2 simulators if i need to get rid of the code?

 

if it throws a cold, just go to AutoZone and they'll clear it.

 

It'll just come back tho, right? or can they permanently get rid of it?

 

i had a xtc 2.5" catted dp and never thru a CEL. i think you'll be fine.

 

Ok, thanks if it does ill just deal with it. Did you see any improvements or changes in the sound?

 

you'll notice a slight gain because the stock dp is so restrictive. as far as exhaust tone, it'll get slightly louder but nowhere near as loud as a catless dp.

 

you can get the simulator on ebay

 

you don't need an o2 simulator

 

if he throws a 420 code he will mine did you can ask CA like i did its a 50/50 shot

 

can you please post in english?

i had no issues with my 2.5" xtc catted dp throwing a CEL.

 

Just because yours didnt doesnt mean it wont happen its happened to alot of people you got lucky.

 

good thing i'm a special ed teacher, i was actually able to read your post.

this is the interwebz, you don't have to use proper grammar.

anywho..... there's no sense in telling him to buy something he probably won't need.

 

well dont buy it unless you need it but you might. Thats all i have to say about that.

 

lol ill just wait and if i throw a code, ill get the o2 simulator. Not a big deal, but im definately hoping that its not needed.

 

i'm thinking because of your mods (gm stg 2) that you'll be fine getting a 2.5" high flow cat dp.

 

Thats what i was thinking, but the tune is a custom tune tho. Would that have any effect?

 

oh it's not a GM stage 2 tune? even better!



who custom tuned it?

 

I had it tuned at raceproven motorsports. They did a good job, couldnt actually gain any power but they made the car much better and easier to drive, and kept the same amount of power even after taking a bunch of degrees of timing out.

 

so you're the 3rd Cobalt (2nd ss/sc) that i know that they've tuned. what were your numbers?