ZouMechE

iTrader: (1)

I installed a Borla adjustable catback on my otherwise stock car, and now at idle, there is a rather annoying banging/vibrating noise coming from underneath the car. I've read of people having this issue at WOT, but this only happens to me at idle.. Anyone else have this issue or have any ideas?
TIA

mikh338

iTrader: (16)

that happened to me with my corsa catback also, it was banging on the rear end, 3" pipe over the axle is a tight fit especially on lowered cars. mine drove me absolutely crazy so i took it off and fabbed up custom true duals lol

ZouMechE

iTrader: (1)

Yeah..true duals seems to be the solution for most people..haha. I'm not lowered, but the over axle piece was tight. Guess I'll just have to wait til spring break in a couple weeks to take a look

Blackpanther99

iTrader: (8)

What size pipe did you get?

ZouMechE

iTrader: (1)

It's a 3 inch

z28SSilvest

Make sure its not hitting the trans crossmember

Blackpanther99

iTrader: (8)

Thats the reason I was asking^ lol

Could be hitting since there is very little clearance.

z-maro

iTrader: (18)

Mine was the tail pipe on the passenger side rubbing on a heat shield type thing:

Blackbird-WS6

iTrader: (15)

Im lowered with 3in over my 9inch rearend which has bigger axle tubes then the 10bolt and my magnaflow doesnt hit. I will be making a 3.5 I-pipe here soon over the rearend.

z28SSilvest

Here is mine. I had the "ears" of the trans crossmember cut because it was touching my 3" pipes and causing a huge vibrating noise

omarrakeen

iTrader: (2)

^ i had almost similiar issue with my custom Y pipe but i slightly bent them.
OP you might want to take a look under there and see where exactly is it hitting..it might just need some adjustments.