Rumbling noise when i accelerate

[Diablo3305]

Ok, so I took my truck in for this awhile ago, and I still hear it....i think its very odd... When I accelerate (usually somewhat hard acceleration), I get a rumbling noise...its sounds bad....anyone else get this?

 

[2001gtboy]

well my first impression would be that maybe your tranny is putting the car in a lower gear then the rpms can handle, but if your excelerating hard that obviously wouldn't be it, unless under WOT your not going anywhere fast.

 

[2001ExpSport]

Sounds like an intake leak....check that.

With a KKM intake you will get a rumble sound under accelleration. It does that because it is out of the stock airbox which muffles the noise normally.