The Greddy application (TI-C) is 2.75. That coupled with a test pipe or HFC should be ok for NA I think... Based on everything said here so far. I feel like I get a little more power to the wheels through the power band and not just high end. That is just seat of the pants and not so much tune/dyno. I do howerver know this. Once my Z realized that I was not taking the aftermarket bolt ons off it is over correcting the A/F mix and now the car idles at 1000 rather than the 6or700 it was at without the CEL. (Also CAI on the intake side for a little less congested airflow).
I like my setup and I think it works pretty good for this little car. Without spending 8000 - 10000 on a FI kit I have a little bit more HP and I can at least keep up with the NISMOs out there>
