Yep, my Nismo does the same thing on a cold start, but it goes away after warm up.
If you live in my hood you are just SOL...my other ride is diesel with a strait pipe and 6 in tips. My next door neighbor has diesel dually with strait pipes and the neighbor across the street has a v8 Nissan PU with an after market exhaust. So the addition of my Nismo and short-tails have brought smiles from my neighbors.
As they say in real-a-state...location, location, location.
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