well the dumptube has like 6 inches of clearance on both sides. The downpipe is a tight fit but i know what the downpipe hitting sounds like and i dont think this is it. I may take off the downpipe and hammer the shit out of it and give it some more clearance so i can at least rule that out alltogether.

Im hoping there isnt a crack on my manifold...somtimes rattles are from small manifold cracks that continue to get worse over time. The manifold doesnt appear to have any cracks and all bolts holding evrerything on are as tight as i can get them without stripping something.

One more time Ill describe it.....

alays makes the buzz/rattle around 3500. Will do it in neutral revving in the 3500rpm area. If I hold rpms at 3500 its just a constant buzz that permiates though the whole car and can be heard outside the car as well. Almost feels like its coming from the transmission area. Its not clutch buzz i know what that sounds like. if this was clutch buzz it would be HORRIBLE clutch buzz and would make me worried that my clutch is easting itself alive but it shifts perfect and has no issues. HELP!

 

i know man i was thinking that same thing. It doesnt look like there are any cracks but i have a feeling there may be one and thats what im hearing. There isnt any exhaust leak that i can detect though. Thanks for the help guys keep it coming!

 

ok guys tonight im gonna take off the downpipe and check for cracks. Im also going to go over the manifold on the car as best I can to check for any cracks. I have a bad feeling about it because the downpipe has a decent amount of room and i dont know what else it could be. Its starting to get worse so if its a crack its growing. I still dont hear any manifold leaks and the turbo spools just as quick so i dont know what this is but its driving me crazy.

 

Keep us updated on what you find man.

 

if your running internal wastegate it could be that disc that flaps around when the wastegate is slightly open....

 

a friend of mine had a rattle and it was a broken bracket

 

You know what soul, i was about to make a whole thread to thank you. It was a weld on my custom exhaust that had basically cracked all the way through. Took it off went to the shop down the street, had a new weld layed down and shes perfect again. You rock man, thank you!