Without any mods i wouldn't bother with a ECU upgrade. Our ecu should be located behind the center consule under the dash. Go to JWT's website and they have a thing showing the location of the ecu. But if you don't have any mods then i don't think the ecu will give you very much of a hp increase. Get other mods then get the ecu reprogrammed and you should notice a difference, Correct me if i'm wrong guys.