95 Z28

iTrader: (21)

I've got true duals dumped on my car, 3 inch X pipe, magnaflow 4x9s. I huge the tailpipes of the mufflers with good exhaust hangers up to the rear seat belt holes. From ~1600-1900 rpms I get a "waaaaooooo" humming noise from what sounds like the rear passenger side of the car. Even though I have poly mounts I thought maybe the muffler was hitting the bottome of the passenger rear seat well, so I stuffed a rubber bumper type thing in there to see if that was the case. No dice. Anything else I should consider before I say "F' it" and go back to a catback? A couple people suggested that it might be something to do with the way the air hits the bottom of the car or something. Any ideas?

3.4camaro

iTrader: (1)

It might just be the car resonating in those rpms. Mine does it, and I love it.

95 Z28

iTrader: (21)

Hmm, I'm probably going to run it out the back this winter but maybe putting some turndowns angled outwards 45* might help until then......(ordering them now...)

matt3383

iTrader: (3)

yeah mine are angled 45's and i dont not have this problem