Cold start rattle after header,op,fp installed by a newb
 

Couldn't think of a proper thread to ask but just looking for a quick answer from the experts --

I installed the OFH, Motiv OP and Berk catted FP yesterday and upon starting up the car made a sound sort of like something was rattling?

Actually driving it after the cold start warm up doesn't seem to have any strange noises, both high rev and low

Would appreciate if anyone gave it a listen and chime in if it's 'normal' or within expected range or not. Catback is stock*

I'm also worried about mini exhaust leaks due to my first time installing this sort of thing but will save the check up for next weekend


Here is a video of the start up(lower volume a little it can be loud): for reference, iPhone used to record and was sitting on ground approximately 3 feet away from exhaust tips
[ame="https://www.youtube.com/watch?v=1Bp146e2HrM"]FR-S BRZ GT86 Open Flash Header + Motiv Overpipe + Berk HFC Frontpipe + Stock Catback - YouTube[/ame]


I found another video of someone with the Borla UEL (stock exhaust) cold start for comparison:
[ame="https://www.youtube.com/watch?v=7ZM5d_7c5Xo"]Borla UEL headers with stock exhaust - YouTube[/ame]

Sounds like rasp, but you shouldn't with a catted FP...

Was there clearance with the op and sub frame?

Sounds like something's hitting something. Check clearances - there's not a lot of room I've noticed.

There is very little clearance between the subframe / swaybar and OP --- maybe a little less than half centimeter -- but when Installing everything I wiggled it around and there didn't seem to be a way to get any more clearance

I guess I am just going to jack the car up again and run under it to see if anything is shaking at start lol

It could be the cat if its damaged, or defective. I would try to get up under there when its cold and tap on the exhaust with a rubber mallet or something to try to duplicate the noise.