The car almost like bogs down when you go to give it the gas, most of the time it seems like at lower rpms and when cruising the same speed and go to give it a little more gas. I have a shop that works on the car and they specialize in z's just not to much in aftermarket, there is no engine light on, I guess I will have to swing by there shop when it is doing it. Was just wondering if not having an upgraded chip would cause that with those 2 minor mods