ok so my friend has a ef hatch with a d168 block and d15 head the jdm zc head so the gut who had the car before him wired up the vtec through a tach YES A TACH when u turn the key once it lights up the tach and u adjust it where u want ur vtec to hit were are gonna wire this car up the right way i knoe we need to run the vtec wire through the ecu but i dont know whut ecu to use its obd1 so is it the p08 ecu ? someone help