Need to do a idle relearn with them if not idling correctly. If you have ecutek/cable then it's easy just click the idle relearn icon done.
I've had them on my G37 for a few months I was a test car.
No I do not have any dynos as of yet. I plan to do that soon, but it will not be a true before and after will be on the same dyno though. I just added JWT cams and changed out my ebay exhaust to a FI CF. Car has ran 12.7@109 car is 320/265 before cams and exhaust.
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