Hello! OK!!! I have a b15b2 hatch dx 88, I spend on put the crx si fuel and electric swap ( now is mpfi) i bought a head b16y8 VTEC sohc and a d16a6 complete motor not vtec. With the vtec head I can use a APEXI to control fuel and vtec without change the pm6 computer or I need to change any way to p28? What head is going give me more power the not vtec with 3 stage cam on it. Or vtec with the Apexi.?? The block is going to be d16. I try to avoid the obd0 to obd1 swap. PLZ HELP ME!!