got300zx?

i have an upgraded ecu but my car doesnt have all the right mods to support what my ecu is tuned for so its actually slower if i put the it on. Right now i am just running an intake and everything else is stock. I might just have an intake on but i beat a 03' sentra spec V from a digg with my car running strong on all 6 injectors, just needs a good driver. Sorry i cant help you much here but i recommend if you get an ecu have all the mods that is on the tune that the ecu is programmed to have. My ecu is socketed, which is helpful, so i can just simply switch out the eeprom if i'm wanting a different tune.