Fibbado

iTrader: (8)

My car... 2000 Z28 with longtubes headers and dumped bullets...

The symptoms.. vibration around 1800-2200 rpms... various rattles... some might be stereo related even though i have the stock stereo.

My question.. when i get my exhaust taken all the way out to the back will that help with the vibrations and rattles.. and if not what is the best way to take care of them. I've heard sub-frame connectors will help some.

00'WS6Rocket

iTrader: (3)

I have the same setup with duals, but mine go over the axle and I have no vibration in the interor, not sure if thats why or not?? maybe look around for some screws that got loose around the vibration and retighten them

speedfreak440

iTrader: (9)

check motor/transmission mounts.
subframe connectors
a little silicon around rattle-points that are hidden

In that order IMHO

Tainted

iTrader: (9)

subframe connectors

blackbirdls1

iTrader: (5)

Do you smell any gas or fuel in the interior because they are dumped?

BitViper

iTrader: (63)

Vibrations could be from resonance from the pipes....rattels....vibrations from the resonance...

JD_AMG

Rattles from driving over bumps/road impurities will be fixed with better shocks (konies for example). Also SFC wont hurt.

Fibbado

iTrader: (8)

As to smelling gas... occasionally but its not overpowering.. hardly as strong as i smell it when i fill up the tank.. and i rarely smell it. Either way im going with over the axle out to tailpipes soon so that wont be an issue. I'm also gonna set it up so i can change my mufflers easily from dynomax bullets to moroso spiral flows.

Subframe connectors are definitely going in. Thanks for the advice..