Quote:
Originally Posted by brancky3
I have non res and a Nismo catback, the hiss is pretty apparent at full throttle under 4-5k RPM, but you won't hear it up top. I don't really get any rasp or drone.
Edit: How much louder is the Stillen CBE compared to Nismo? I'd be happy to make a video of my car, just tell me what you want to hear
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the hiss should only be happening on decel.
if you hear a hiss during accel you may have a leak. check your gaskets, connections, and tighten all bolts.