Originally Posted by F.I. Inc.

Congrats on your new Z as well. Glad to hear that you have taken an interest in our products. Do not hesitate to give me a call if you have any questions or would like to place an order. As for a retune being necessary with th G III intakes, it is not. The combination of the intakes and either stock cats or high flow cats and a cat back exhaust will not require a retune. Now in the event you run the intakes with our long tube headers and cat back exhaust, I recommend a retune. We have found during extensive dyno testing the 370Z likes to run a little lean with the G III intakes, long tube headers and exhaust. The retune will do a nice job in making your Air/Fuel ratio optimal.

Thanks, Tony