Firstly , sorry for my language, it's on weak level;]. i SWAPed the d15b engine from jdm ek3 into my eg4 and conversed wires to obd1. But when i turned it on - on free gear- it choked and sounds really bad. but when i drived - it was everythink ok and really fast. OBD1 can support only 1 vtec , so I resign 1vtec - vtec-e, so make it 16v still, since engine start. Engine sounds normally when I disconnect the vtecs - then it workin on 12v . So I think the problem is that engine should work on 12v on free gear. So do anybody have any idea, how to make 2 vtecs on obd1?