I just got my Invidia test pipes installed the other day and it's been rattling like crazy during 1600rpm-1900rpm where it drones the most... I got it back up on the lift today at the shop it was originally installed at to take a look but it seemed like none of the piping was hitting anything. The rattling seemed to be coming out of the Y pipe of the catback? I have NO idea what is causing it, and it's driving me insane. It sounds like loud metal on metal rapid rattling. The test pipes are brand new.
I've been trying to look up the cause and from several different forums, some people say that it's because of the VQ engine... But I know a few people with the VQ37 that have test pipes but none of this stupid rattling. The shop said it was because these particular test pipes do have not have a support bracket so it can't be bolted onto the car, unlike the stock cats. The oem bracket was not reinstalled with these test pipes. I also looked at other brand test pipes and they do have the support bracket (T1R, Berk, etcetc..). Emailed the shop I got it from and he said that shouldn't be the problem though, and if it was I assume I would be able to find a lot more results when just searching "Invidia test pipe rattle", but not many pop up (none that actually have a definite answer).
I've also heard that test pipes with this particular catback (Invidia Gemini) cause the rattle, but that didn't really have any information to back it up other than the statement..
Another thing is that the guy in this video has the exact same set up and no rattle. Revving starts at ~1:10
Don't have a video of the rattle yet, but will take one soon. Can anyone help me out?
