Hey guy, could use a little help here. Trucks an '05 4.6L with a few various mods. For awhile now, I'd say since I installed my Edge Evo, I keep hearing this odd noise under medium acceleration from a dead stop. Sounds like leafs shaking, best I can describe it. I looked best I could at the exhaust, besides a leaky header, I've got no odd leaks, the heat shields aren't making contact with anything, and nothing seems out of place.

Neighbor mentioned it could possibly be the sun shell in my transmission, but I've had no issues with shifts or any such things. Any ideas?

 

Try returning the tune to stock and see if it makes a difference.

 

Yes, returned to stock, same deal. I thought for awhile it was my exhaust rattling on the heat shields, but they are nowhere near close enough for that and they don't have any play to them