exhaust vibration

[Juice780]

i had a 4" mbrp exhaust put on my 07' f250 today and it was done by professionals and when i got home i installed an mbrp cat delete pipe my self well now i seem it to feel a vibration when i step on the gas, i thought i felt it when i pulled in my drive way before i installed the delete pipe, anyone know what this could be or is it normal

[CAT797]

I'll bet your downpipe is hitting on the firewall somewhere or the pipe is laying on the transmission crossmember.......I've been trying to adjust mine due to the same issue, and think I got it tonight.

[sea71]

Not 100% sure, but you may wanna look at the bolt head at the crossmember where the downpipe connects to the next piece. Thats usually a REALLY tight spot and it can vibrate like heck if its on that bolt head.

[Patrick]

Originally Posted by sea71

Not 100% sure, but you may wanna look at the bolt head at the crossmember where the downpipe connects to the next piece. Thats usually a REALLY tight spot and it can vibrate like heck if its on that bolt head.

That is usually the big mystery. Easy to fix, but hard to notice if you havent done it before.

[artk.meyers]

I HAD THE EXACT SAME PROBLEM AFTER INSTALLING MY MBRP EXHAUST, CAT 797 IS DEAD ON, MY DOWNPIPE TO STRAIT PIPE WAS SITTING ON THE TRANNY CROSSMEMBER MOUNTING BOLT.I TRIED ADJUSTING IT TO NO AVAIL..I FINALLY PLACED A SMALL SQUARE OF SILICON RUBBER ON TOP THE BOLT IT WAS HITTING...PROBLEM SOLVED

[Dan"gerous"]

I had a horrible vibration when I punched my 04 after installing my Magnaflow. It turned out I didn't have the downpipe flush against the turbo flange. I took the clamp off completely and wedged the pipe snuggly against the flange and re-installed the clamp. No more vibration. If it isn't tight it will hit the firewall.

[onebigbad6.0]

If you go to Hog Performance exhaust's website that have a video on exactly where to bend the firewall and stop the vibration. I too have the mbrp 4" system and mine did the same thing. Theres not enough room for the exhaust to work freely without hitting that firewall. I just used a hammer and a brick and tapped it out about 1/4" and it hasnt vibrated since.

[Juice780]

i fixed the vibration the hanger was hitting the frame from my cat delete pipe and the down pipe was hitting the firewall, so no more vibration thanks for the help

[Dan"gerous"]

Good to hear