I just installed the Ultimate 3" turbo back / 3" cat.
Anyways, when under full power are when hitting some bumps in the road the Exhaust is hitting a Nut on the Rear End.
From what I can see its not on the nut.
The exhaust is clearing everything else just that dam nut.

Any ideas to correct the problem.

thanks

 

Take some silicone hose (10mm x 1" long) and put on the end of the nut . Viola ! Instant muffler bearing .

 

Ouch - just be glad it's the exhaust.

 

Engine moves within its mounts and also causes exhaust to move on the rubber hangers of its mounts. This causes clearances to change while under load.

I don't have any experience with the Ultimate system, but I experienced similar problems on initial install with of 3" exhaust and fixed it by loosening the system and rotating mid-pipe a little to create additional clearance.

Vishnu later solved the problem by adding a transfer case bracket to the downpipe that keeps it firmly in place during hard cornering and braking.