plug and play . kit's been on my 04 Z33 for a few months without any issues or check engine lights . the adapter pates from Coz are top notch and the whole install was super easy . however on a completely stock engine you will probably not see any difference in power I would recommend this if your going to have plenty of supporting mods on your Z along with a good tune but if you have a faulty oem unit then get this kit .

Great quality product, I had one issue with the pigtail connector. But the great customer service, even with this covid stuff going on I was able to resolve quickly. I'm excited to hit the dyno and put this throttle body to work.

Great kit, easy to install and well built. The adapter works as advertised and I'm happy with the performance upgrade. I will say that the throttle tends to hang open a bit more so the revs don't drop as fast between shifts, causing me to granny shift all over the place. I'm going to see if I can have my tuner work that out. Also for those wondering, no it is not required to use the coolant ports on the new throttle body, although if you really wanted to, I suppose it wouldn't be a bad idea.

Was going to order the NWP but I thought I’d give CZP 75mm throttle body a shot and let me tell you, This product works great! My butt dyno noticed a immediate difference.