jlashley2001ss

iTrader: (5)

Alright guys help me with this. when my car is in D(3rd) and running the rpms up some going down the road i hear a vibration underneath..comes and goes comes and goes, etc. Is this my exhaust, pipes WTF?!

chewy99ws6

iTrader: (8)

it might be your Y-pipe banging on the driverside floorboard, since you have an aftermarket one.

SS4Luck

iTrader: (10)

i get the same thing too but mine is a M6... i thought it might be clutch... but when i put the clutch in the noise doesnt stop

barracuda_440

broken trans mount? i think thats what mine is.

Rob98LS1

iTrader: (5)

when i stomp on the gas my car gets a virbration because my tranny mount is shot to hell.... just something to consider.

jlashley2001ss

iTrader: (5)

ok well i may just replace it then. is this the same thing everybody else thinks...trans mount?.

smg267

iTrader: (23)

I have the same exact thing!!!! I just replaced my transmount and checked the y pipe and put a peice of rubber hose on it to try and solve the problem but it still makes the sound. Only when I tear into it 4-6k in 1st and when I shift hard into 2nd. It stops after that. I think its my stock catback banging around. I would check all your hangers.

BREAKPARTS

My Exhaust Makes A High Pitched Chirping Sound Like Its Abelt But Worse.. I Get Under It And Shove My Boot Between The Y Pipe And Floor Board And It Stops...cant Seem To Pinpoint Which Component Is Vibrating Tho. My Headers Actually Touch The Frame Rails Enuff To Scratch Of The Thermal Coating So Im Thinking Its This And Might Clean Up With A Cutoff Wheel.and My Y Pipe Hits The Floorboard When The Car Twists Off The Line.

Blk97WS6

iTrader: (19)

+1 for checking the trans mount

orangeapeel

iTrader: (18)

It is probably the y-pipe beating on the floor.