my friend just did a d16z6 swap in his ef. we live in virginia and one of the best places to go is custom car care for wiring and etc. they said it would be 450 for the obd0 to obd1 harness. they messed up and ordered a conversion harness for it. i dont know if its wiring or the motor itself but it has a really bad idle. runs from about 1500 to 2500-3000 at idle. white/grey smoke pours out. any help would be highly appreciated. thanks guys