i have a a ls integra and i want to know do i have to change out all the wire to change to a vtec engine its a obd1. do i have to change nothing but the egine wires or all including the wires beyound the fire wall

 

Wouldn't you get an ecu + wire harness with a VTEC motor? I would assume you need a harness for the extra "things" that come with that kind of motor.

 

.... huh?


research "ls-vtec" it's been beat to death.

as best i could understand... you have an OBDII integra... and your wanting to vtecisize it.

your going to need a new ECU to match the engine... if the one you have is OBDI...then buy a conversion harness.
you will not have to change the engine harness whatsoever... but if your ECU has a knock sensor you need to have it bypassed.


that's about all i could understand of your questions

 

if you have a obd1 ls and the vtec head you are throwing in there is a obd1.. you need to just add wires to hook up the vtec.. http://www.allmotorhonda.com/techpag...ies-wiring.htm tells you the wire colors and pins for the ecu.. you will also need a p28 or obd1 p72 ecu depending on the head... or you can just run some type of engine management (ie: crome, hondata)