New Exhaust

[carm23]

I recently installed a custom 2.5 inch exhaust with a carsound high flow cat and a remus muffler. It's finally hot enough to drive with my windows down and I noticed ESPECIALLY in first and second gear when my windows are completely down and I can listen that when I let go of the gas and stay in the gear there is a pretty loud rattling sound. When I leave it in neutral though it goes away. Could it be because my cat is no longer right after the turbo although I don't see why this would make a difference? How can I elminate this REALLY annoying rattle?

Thanks

[nick74302]

i had this problem.it may b that the exhaust is touching the saftey strut.it is at the back underneath the car.its just incase exhaust rots.and stops it touching the road.i just chucked mine away and problem solved.i have uk model.the sound is the pipe rattleing against it.it then travels along the pipe."chuck it man"
.it ok. OR.......cat cracked.