S2KCHRIS305

Hey guys so I recently installed a Pfab Front facing manifold kit, along with AC relocation kit, and a berk 3 inch single exhaust. I now have a 3-4k rpms vibration that I feel throughout the whole car when I go into that rpm range. Ive tried looking for anything touching the chasis or maybe the exhaust touching some kind of heat shield under the car and nothing. Im super lost as to what is causing this, it did not have the vibration before the changes the car recently had. The vibration happens in gear, neutral, parked, in any situation when the car is in the 3-4k rpms range. What do you guys think ? Its super annoying as the car is driving great, would be amazing if I can get rid of this vibration. Help me out.

Habitforming

Long shot, but are your motor & trans mounts ok?

spectacle

How close is your dumptumbe to the subframe? Lot's of times it will vibrate and move under load and hit something.

S2KCHRIS305

Motor and trans mounts looks fine, but il double check.

S2KCHRIS305

Dumptube seems to clear everything really well, though I havent checked it out under load. I will have to check that out, though I really doubt it.

S2KCHRIS305

I do notice that when I touch the downpipe while I am revving the car to 3-4k rpms, I can feel vibration in the downpipe that resembles the vibration I feel in the car when im driving. But then how will the downpipe cause almost the whole car to vibrate doesnt seem to be touching the chasis in anyway. completely lost!

dwb993

CV Buckets?

https://www.s2ki.com/...1#entry23507572

indi00

Worth a try. Put one half shaft spacer to the left axle.

1. http://www.ebay.com/itm/Axle-Half-Sh...6a5783&vxp=mtr

2. Then swap CV buckets after it becomes pitted.

3. Then put a shaft spacer on the left axle again.

4. Need new CV Buckets. Then start over.

ExcelerateRep

Definitely double check motor/trans mounts, axles/CVs, etc.

Habitforming

The OP says he gets the vibration whether in gear or not, parked or moving. Can't be the CV buckets.