okay the engine is in and running, since the car is a 92 cx, everything was plug and wired already except the knock sensor right?

where do i access that wire from the engine bay?
and where do i connect that in the ecu?

 

red/blue wire to d3 at the ecu

 

you're IAB wasnt wired either, move a20 to a17

 

whats iab?
does that have anything to do with idle?

cause im idling like 2-300 below what it used to.

like around 600rpms

 

you should be 750+/- 50 for idle, with the IAC disconnected 480+/-50. the IAB is your secondary runners in the intake manifold. they open at 5500 rpm to give you more topend power.

 

tell me everything you've done so far w/ the wiring... you might be missing some things.

 

this is what i've done

again its a 92 cx with 95 obd1 gsr engine
i pluged all the harness and plugged in the ecu

thats it.

hhaha, i haven't had time to wire the iab or knock.

 

well hurry up so you can kick some tails!!!

 

affirmative, fire in the hole!

 

I got the same problem. I wired everything according to the post. Moved A20 to A17, red wire to A20, red/blue to D3. But when I drove it, 5500 rpm went by without feeling that VTec kicking in. Is there any way I can test it to see if Vtec came on? I just strip the wire in put it in the slot since I don't have any extra pin. Will it work? Do you know where I can get some pins?

 

yup, usually bad contact or no contact at all happens if you just put it in the slot. go to a junkyard, they should have em.

 

So is the IAB wired into the ECU or what ? I thought there was not wiring (vaccum controlled) I am running a obd2 gsr on an LSVT and am experiencing a similar problem.

When I did not have the vtec connected, the engine would just about stop at 4800 tho... (just for info towards the post)

X2