how can you wire vtec to A4 and D6 when pm6 only has A, B, and C?

You cant. A PM6 if for a nonvtec OBD0 engine. You could either use a vtec controller or convert to OBD1 and use a P28. Good luck. Let me know if you need any other help. My shop is in MD. Check the sig

yea i know but mine was chipped to activate vtec

haha oh.. you got me on that one.

so you have no idea?

contact whoever chipped it and ask what pin its routed to for the VTP

A4 and D6 are the vtec pins for an obd1 ecu.If your obd0 pm6 was converted into a vtec ecu than the pins should be the same as a pr3 or pw0 obd0 vtec ecu.
A8=Vtec solenoid
B5=Vtec pressure switch