WOW!!! I think we have the same problem. Mine does that too. About 2500-4000 just like yours. Sounds like a heat shield, but no exhasut work has fixed it. Does yours seem to really buzz most on a shift from 1st to 2nd? Mine does. I was hoping it was just exhaust stuff, but apparently it could be transmission. What would buzz on the tranny though? It makes me so mad because my KC exhaust sounds beautiful, but it's overshadowed by that buzz...makes it sound like I have a nice exhaust sytem that was installed wrong or something. Yea...I'd love to have some help on this topic. Should I bother replacing my 3rd cat? I already cut the first 2, and the buzz is still there. The heat shields have been taken off the pipes leading to the 3rd cat (except for the 3 into 1 "header" heat shields) and that didn't get rid of it. It drives me crazy. Some of you really smart SVX guys...give us some help!
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