EVO MR FU

iTrader: (4)

I have a greddy sp2 catback, installed a while ago,

When the car is idle there is no noises or anything, I dont really smell any fumes

but sometimes when Im parking, at very low RPMs I hear this hissing sound only at certain low rpm is this a sign of a exhaust leaK?

evoeffect

While the car is idling get out and look along the exhaust from manifold back, and see if you hear the sound again. While you do that, run your hand along the exhaust (while it is still on, but not hot yet) and see if you feel a leak. You don't have to touch the metal just get close.
Anyway, if you feel a rush of air, it's a leak. They make something call muffler mender at Advance that patches that up real nice. I have used it and it works.
Hope this helps, bud.

EVO MR FU

iTrader: (4)

I just checked, I dunnoe if My hand can't feel **** or what, but I dont really feel any air...and there is no hissing sound, the sound only come when Im parking, and reving and clutching at low rpm for a second I might hear it. then it goes away.

GoRacerXGo

you could always get new gaskets or at least tighten everything up again just to be safe.