I agree, not as good as a tune but I can remove it when taking it back in for warranty work. I feel a bit of pep in the car. Same for my friend that has one for his G37.
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Originally Posted by LOU@AMPLIFIED
We actually have this on our Z. Yes it give your HP and TQ, of course not the same as a custom tune but enough to feel the difference. They also have installed a map to minimize the throttle lag due to the drive by wire. Smoother throttle response without the dreaded lag that everyone hates. 
We are currently working with them so they can make maps available with different intake setups, exhaust and HFC/TEST PIPE combo so you can get the full benefit of your bolt ons. I will keep everyone updated, its still a working process |