Hey guys, lately my car has been sounding a little like it has an exhaust leak so i checked it out and it seems there is air coming from my downpipe (i think?)...heres a pic of where the air is coming out of...its right after the little coil looking part...what do u guys think could be wrong??

http://img196.imageshack.us/img196/8962/007esd.jpg

 

does it sounds like air is being sucked when you rev it? cause mine sounds like that lol im concerned

 

For whatever reason I can't get that picture to load, but i'll guess that it probably cracked right at the coil part of the downpipe. Thats what happened to mine at least, I think its a pretty common thing.

 

what does an exhaust leak sound like anyway? how could you tell? just wondering

 

everyones splits at that shitty flex along the line just upgrade to a 3" to 2.5" downpipe with a REAL flex on it.
it kinda sounds like you have a turbo spooling up when you hit boost lol.

 

haha 05slowline you hit the nail on the head...first time i noticed it im like oh **** it sounds like i got a turbo lol... kind of sucks because i want to go back to a stock quiet exhaust so i might just bring it in for warranty and have them replace it

 

so i can only tell under boost? i cant tell if i rev it?

 

killa...ususally if u have an exhaust leak ur exhaust will sound different and louder... also another way to tell ive been told is to hold ur hand over the exhaust in the back and u can tell if there is no pressure if u can cover ur hand over it without a problem

 

If you get a catted 3-2.5" dp it won't really sound much louder if at all. You're only an 07 so yea I'd just get it warrantied, but you'll end up with the problem in the future too. Only fix is a weaved flex pipe.

yeah pretty much. I thought it was something in my intake tract for the longest time and had torn that all apart a few times. finally someone suggested flex pipe and makes sense cause they just get a pinhole in them and expands loud enough to be audible under boost. probably can't hear it too well just reving it.

 

hm so if i put my hand over it with no problem and theres no pressure theres no leak?

 

take your car out, get into 2nd at 30, floor it, do you hear a hissing noise.
like i said it is usually literally a pinhole imperfection that occurs holding your hand over it will get you burnt when you pull your hand out and hit the header and probably will not help find the leak.

 

no lol i mean puttin my hand over the exhaust in the back like Sachemhockey44 said above.
and its a new motor lol so i cant really floor it

 

Or it can sound like a flutter if you are leaking at a flange where your gasket will be vibrating its really annoying trust me lol

 

run seafoam thru a vaccum line watch for smoke around header primaries and flexpipe. if u seee smoke.. its obvious.

 

i had mine break there twice one time warranty fixed it took like three weeks to get the part it buy mine had a big 3 inch crack in it so it was extremely loud kinda funny for a little while i loved it when people cut me off and they had their windows open id drop it in second and cruse right next to them.

 

im gonna bring it in soon, do you think theyd bitch to me about the work i have done to my car...its just stage II which was installed by them, and a gm sport catback which i installed

 

Shouldn't be any trouble getting it covered.

 

Dam, this just happened to me.

It's the flex pipe that's broken.

Mechanic told me he could get a new flex piece and weld it onto the downpipe, because otherwise I'm looking to buy a new downpipe (which has a cat so it's pricey)

 

You have only GM parts...so no, they cant say anything. GM wants you to by GMPP...and even if you had aftermarket stuff they have to prove that said part caused the leak.