how easy is it to wire up VTEC, i just put a 93 si in my 91, how easy is it gonna be to wire it up, cause some people are saying its gonna be hard, and some are saying its easy

 

zdyne ecu one wire convesion is $320
wire it to a monster tach shift light
wire up a msd and bosch switch

those are the ways i can think of doing it. look up the wiring diagrams for the tach idea and msd switch in the search. the easiest way would be to go zdyne one wire convesion... zdyne.com

 

im gonna go with an 8 if you havent done much wiring....your 91 is non-obd, and the 93 Si motor is obd-1....so you are gonna need to make a harness(or buy 1 if you can) to convert the body harness over to obd-1 on the ecu side, and convert the distributor plug to a clear connector instead of a grey one, to match the 91 engine harness, also run vtec wires, this shouldnt be too difficult, from the solnoid to the ecu(VAFC,etc..).....if you are goin to use the 93 si harness then you would have to swap the body harness from an obd-1 car...