[willan]

A 2000 GT, this is a weird sound. When cold the car makes this weird growling sound. I know, I sound like a freak but thats the best way I can describe it. Happens when I let my foot off the throttle, during deceleration. It last about 10 seconds then goes away. Can anyone relate to this, Thanks for any help you all might be able to give.

[Vortex]

does it sound like exhaust backpressure? sucking cold air up the warm pipe? aka "mini thunder" lol.

[willan]

Vortex, you couldn't of said it better. I thought it might of been exhaust but I couldn't pin point it. Any solutions?

[Vortex]

i haven't heard of a solution per say, but it doesnt hurt anything either.. you still have 6 cats and 2 mufflers on correct?

[willan]

Yes All stock. Thanks for the info.