Got a chip for my 91 NA Z. Right off the bat I could tell a difference in how it ran. Throttle is more responsive, low end pick up is much better, power band through entire RPM range is much smoother. I thought my Z ran good before the chip, but that was just the cherry on top. GG, would recommend!

Very impressive how such a little tweak can make such big changes. The car ran smooth already before the chip, but especially the throttle response got so much better. Runs like new.

First off, it is an absolute pleasure to work with CZP for so many reasons. Anyways, my Z was not passing CA smog, and this tune (along with some new plugs), and the car passed with FLYING colors. Not to mention the amazing throttle response, and overall improvement of the car running. Butt dyno felt a difference too! Absolutely best money I have spent in awhile!

Bought this for my rebuilt 1990 tt. I have 550cc subaru injectors and couldnt find any other site that supported those injectors. This chip makes them run perfectly.

Well after installing bigger wheels and tires i noticed some lost of power on my 94 300zx and now scince i have the ecu chip upgraded on it is back or better than before i think is worth the time and little money i have spent on the older ecu and chip.the best customer service and sale handling i give a thumbs up to the guys @ CZP thanks Nick.