I was wondering if anyone on here is using this? If so how much of a gain do you get?

 

anyone?

 

First off, it might help if you clarify your question. There is no product out there called "cobb tuner". However, I did find that Cobbtuning.com has a product for the G called an "AccessPORT". Is that what you are referring to?

http://cobbtuning.com/products/?id=3687

 

You will get few, if any, answers to your questions if you post in the wrong place. This is the appropriate place to post this type of question, the tuner/dyno thread: https://g35driver.com/forums/tuner-dyno-287/ . To find this thread, go to Forum on the top of the page, scroll down to Tech Area, then finally to Tuner/Dyno. Also, another place you can search is on MY350Z.com. There were several posts over there about this product, the last time I checked.