well if your desporate. you could take off the resinator and buy a new one. but it should be under warrenty.

 

No, I've got plenty of clearance under the bumper. Maybe too much, it kinda looks a little too low. I thought about having an exhaust shop put on a new res, but I think I'll send it back in. Its going to be a pain to return. I have to get a Return Auth. Number from Autocarparts.com and then mail it back to Greddy. They said they would test it, and if it was defective then they'll send me a new one. Thanks for all the help and suggestions. I don't know how long this is going to take but I'll try to post something when I get this taken care of. I haven't give up hope yet on Greddy.

 

roll around with out any exhaust after the cat... then tell us about your headache[8D]

 

I have a Greddy Evo2 as well and the same thing happened to me. Check the gasket between the pipe that runs from your muffler and conntects to the pipe that runs to your cat (or straight pipe in this matter). The gasket that came with mine was completely rusted out (it had been less than a year) and as soon as I disconnected those 2 pipes, the gasket fell into about 10 pieces on the ground. Hope this helps!!!

 

I though you had a magnaflow? My exhaust has been rattling since I put on the new header. It stops once the engine is warm though... it is quite annoying.

 

^ dude a spring in my passenger seat rattles when nobodys *** is in it. i got to put a rubber spacer in or something.

 

Adding to this problem: I took the Greddy off this weekend and put the stock stuff back on. The noise disappeared. So my thoughts - I think I have pretty much isolated the noise to the exhaust(Greddy), not the car. I'm emailing autocarparts.com to get a Return # then I'm going to send it back. Makes me happy I kept the stock stuff, just for this reason. I hope it doesn't take Greddy too long to evaluate the piece and get it back to me.
Sam, I didn't have any bad gaskets. Before I was able to isolate the problem to the cat-back I re-checked all the bolts and hangers, everything was in order.

 

is there anything loose in the parts? it sounds like a resonator problem to me.

 

No, I took each piece (3) and shook them like crazy. No noises coming from any of the three. I'm pretty sure that the pressure of the exhaust fumes pushing through the cat-back it whats causing the noise. As the car comes up in temp the noise becomes louder. Something to do with increase in heat.

 

i think something must have been loose. the sound was caused by the pipe hitting against the car because it wasnt tight. it was louder when it got hotter because heat causes things to expand. it got even less clearence when it expanded.