I think im gonna post a video. lol The popping is at acceleration. 2.5k to 3.5 rpms. Faster acceleration=faster popping. Rattling is at cold starts, sometimes at idle, and when clutch is disengaged at low rpm. There is also a squeeking noise sometimes, this happens when i disengage the clutch at a low rpm.

 

I know exactly what your talking about. That fast popping is just the straight through "hollow" sound of the new tests pipes. i just did one with nismo exhaust and it does it around 2k-3.5k rpm. its just the new sound of your exhaust bro. when i did i first start up of the nismo with test pipes i thought i left a bolt or somthing loose but didnt. the sound comes directly from the test pipes to but everything is totaly sealed. Your fine bro

 

thanks for the input. i guess the only thing to fix is the rattling.