I recently just bought a Hahn downpipe and exhaust system from modern performance. I'm interested in finding out if any one else has this setup and is experiencing a rattle upon take off?

 

I have the hahn catback and it rattles and clangs when i take off and hit bumps to.

 

I have Hahn DP..no problems at all. Added Agency catback..not a sound.
Check all the hangers on the catback.

 

He doesn't have the Hahn catback. I've heard that it hits the rear axel on lowered cars.
Sounds like your problem.

 

Me too, it started happening after I've installed the eibach

 

Just the Hahn hits the axle? I thought any cat-backs. Maybe I will change mine to agency power

 

Just the Hahn as far as I know. The MxP (Modern Perf) doesn't either. My Agency is 2.50" from the cat back so there's more clearance as well. I'm lowered on Pedders..lot's of room. BTW, it' high Quality polished SS and is on sale from Turbo Tech for $390 shipped..MSRP was $700!