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FastIntentions Catback Exhaust and Lower Downpipe Rattling

3K views 6 replies 3 participants last post by  Maximus400 
#1 ·
I finally got my FI catback exhaust and lower downpipe installed yesterday (loving it so far!). However, I've noticed when going over certain bumps there seems to be some rattling going on in the back. Has anyone else experienced this or know what might be causing it? I tried googling it some but didn't have much luck.

I didn't install it myself, I had a friend of a friend who is the primary GT-R technician at a local dealership, and also does a lot of work on the side on GT-R's. I know this guy does good work so I don't think he did anything wrong - he even followed the instructions from their website. He's going to be taking a look at it tomorrow but I thought I'd check with you guys to see if you might know where to start looking.

It's a non-resonated CBE with sport mufflers if it makes a difference.
 
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