Who did the install? I'd take it back to them. Was the CMC done also? ZSpeed products are top notch, so I doubt it's the HD CSC. Joe can answer any questions you might have.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |