mateols1ss

iTrader: (1)

Hey guys I have a 00 SS M6 and I just installed an SLP y pipe and its bolted up to a new TSP catback. I still have my stock maniolds. The exhaust bangs hard under the car under hard accelaration. I think its right where the tail pipe goes over the axle because the clearances look good everywhere else. Anyone experience this and if so did you fix it? Thx in advance guys!!!

KevinR

Normally you can fix it with a new set of motor mounts.

AwsmGy

iTrader: (4)

Yeah, motor mounts or a hammer to the problem spots.

NeedaV8foundation

iTrader: (4)

did you hook up the mount on the passenger side of the y-pipe?

mateols1ss

iTrader: (1)

Hmmmm mounts sounds like a good idea. I've never changed em. I have thought about hammering but its on a tough spot.

omarrakeen

iTrader: (2)

i have the exact same thing lol its like something is shaking when u wot at low speed right? i only got it after getting my LTs and Y. i can feel it between the rear seats. my engine mounts are bad as hell gonna change mine this week. it must help!

jimmyblue

iTrader: (11)

You have to tighten it up with shims in between any
close pipe:undercarriage points. An inch thick wood is
good. You may want to hose-clamp a chunk of heater
or radiator hose to the top of the pipe wherever it is
banging. For me the tightest point is by the driveshaft
loop.

shepss217

iTrader: (5)

hmm, usually they bang right under the drivers seat, if it's hitting over the rear you will have to get a bracket welded in there to keep it from hitting, mine was hitting right under the drivers seat, i bough a clamp made specifically for this problem from mufflex and it solved the issue, the clamp was like $50 if i remember after shipping

sabersaw30

iTrader: (10)

I had the same problem went to solid motor mounts know quiet as a mouse no matter how hard you launch.

pir7tr

iTrader: (23)

Might try Thunder Racing part number 95-LS1-HR
It is the mufflex part mentioned in a previous post

libertyforall1776

iTrader: (2)

I had this problem with my Borla Adjustable, banging in the same location and exhaust shield annoyingly vibrating -- they include no install instructions, so I finally figured out that the furthest forward pipe has a bend, and I had that bend pointed the wrong direction! Rotated it, and banging ceased! So happy!

PassoutWilly

Motor mounts??? I willing to bet it's your transmission mount that needs replacing, same thing was happening to me and when I installed my new clutch there was a tear in my tranny mount. It's a whole lot easier to change your tranny mount first and see if it fixes your problem than doing motor mounts.