i have a 1990 honda accord, and i've been havin troubles with this loud rumbling sound like as if there was a hole in the muffler, but it's coming from the manifold area, i changed both gaskets that attach to the ex. manifold, but that did nothing, and this is what's reall confusing me, when i make ne type of left handed turn the sound goes away, so even if it's a long looping left handed turn, i can step on the gas and the engine would be very quiet as if there was no problem, any idea why this could be??

Salah