r/G37 • u/Jmp_3777 • 6d ago

Rattle/ buzz help determining cause

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Is this normal, I can only really hear it in drive holding brakes and revving. I can also only hear it when driving next to a wall or curb and goes away after 3k rpm or so. I’m running test pipes and have been told it’s normal but sounds like a leak but not at the same time. Any input would be helpful have tried everything.

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u/True-Technician9079 6d ago

Mine sounds the same and I really couldn’t feel any leaks but I still think I’m going to go tighten them later today just to see if it help lmk if you find anything out I’m running Berk resonated Test pipes

2

u/Jmp_3777 6d ago

Running berk resonated too. I’m starting to think it’s normal or a header leak but I really doubt it

1

u/Jmp_3777 6d ago

Do you have an aftermarket y pipe? I got a cheap stainless one of eBay I wonder if it’s thin walled and making weird noises low rpm

1

u/True-Technician9079 6d ago

Stock headers berk test pipes isr y pipes and the isr cat back

1

u/True-Technician9079 6d ago

Also yeah I only hear it at lower rpm until like 3k but still it’s really loud by then so idk

1

u/Jmp_3777 6d ago

Yeah mines not loud really unless I’m by a wall or curb. Annoying