with vtm wire wondering if i have to plug it in to the ecu and if any one could tell me where on the ecu and what are the best settings for me to set the vafc unit at??????????????????????????thanks

 

well i am not much help but i had one of these and no matter what i would set it at i would have a check engine light come on and i would hit rev limiter around 4500 on a gsr i ended u selling it and the same thing happend to my friend maybe it was defective but good luck

 

If you have any problems, make sure the VTM wire is hooked up. My car threw a CEL a couple of times, so I hooked up the VTM wire and haven't had a problem since. Check http://www.apexi-usa.com and look under the "documentation" section.