Well I'm glad you were able solve your problem, but now I have one. I was thinking of getting the FI exhaust but with what it seems like a common problem of rattles hissing and unknown noises I'm a little hesitant. I've gotten exhausts on other cars and never had problems with them. These are special made for the Z and come from the factory with these issues puts pause in me. Other than the noise do you like the exhaust , sound and power?
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