I was a part of the Hahn group Buy for the 3in catback. I installed the exhaust about 3 weeks ago and now the exhaust seems to be hollowing out. There is fiberglass or whatever hahn uses for their mufflers all over the back of my car. Just watch the vids, I explain it in there.
Cold start, no problems when cold
http://smg.photobucket.com/albums/v2...t=MVI_0781.flv

Up to operating temp
http://smg.photobucket.com/albums/v2...t=MVI_0782.flv

 

Sounds normal man

Welcome to driving a Honda, I mean cobalt.

 

It's not normal, you didn't watch the second one, or about the muffler coming aprt did you?

 

I watched the 2nd one, not all of it. But I got to the point where you put the camera behind the car.

It sounds like any catback you put on this car.

 

umm no, that does not sound normal from the outside, check your gaskets and get a gasket maker, the copper kind. and it cant be your downpipe or header because you didnt even take them off.

also, at your discretion, hose some water up into the exhaust, NOT A LOT, and put a bucket by the tip and lightly rev it to get that water back out and see what are the contents in your bucket, if theres anything besides dirt/oil/grease like metal or pieces of **** then YOU GOT A BAD CATBACK, most likely the muffler or resonator if you have one

 

Watch the whole thing. It didn't used to sound like that, watch both of them all the way though so you can hear the dif.

 

yea that doesnt sound like my hahn did

 

I am sure if you got a hold of them they would help you out.. Nit liike they are some piece of **** fly by night company

 

you mean like ZZP? i used to have a defective header that they kept telling me it was my fault for installing wrong or kept telling me to check for exhaust leaks everywhere else on my exhaust and then i gave it to a friend and he went to have his car tuned with my header on it and the tuner found a hole somewhere and of course just like i did my buddy lost 20hp

 

Yeaaaa, there is a problem with that exhaust.

 

are you catless?

 

No, Stock DP

 

oh... **** that sucks

 

call them sooner then later

 

i dont know what you guys are talking about thats what mine sounds like from day one!!!

i do have 2.2 btw.

 

i can tell the difference in the second video..i hear some rattle or something

 

I figure they will be closed on monday so im gonna call them on tues. Already emailed.

 

Im sorry you drive a horribly shitty sounding car then.

 

Doy have an oem cat? is it possible you blew the cat?

 

I really doubt that. At only 18k...

 

I dont.


How long have you had stage II?


Whats your max boost at WOT?

 

theres no way he blew the cat RIGHT after the catback was installed, theyre not that bad

 

Only 15. It's the exhaust.

 

Im not argueing, i was just asking.



Any clue where the sound is comming from? have you gotten under there and listened? Mufflers are made on an assembley it is quite possible a machine missed a spot weld. Like the others have said, your best bet is to get into contact with Bill on tuesday.

 

I can hear the rattle coming from the muffler itself.