ECU for EK4

[kennee]

If you need a p2t ECU let me know, have one from my b16a2 ek4

[ECU-MAN]

Immobiliser chip may not even be in the P73-003 - I believe that's a JDM ECU which never came factory fitted with an immobiliser

gotta open it up and see - i'm more interested in knowing whats been done to the ecu ECU-MAN

Probably a repair. There is not a lot you can do the OBDIIA ECU.

[rally-spec]

Ended up buying a P30 ecu and now my check engine light is on, vtec not engaging lol... anyone know why this could be? Might have to get that p2t ecu off you kennee..

[rally-spec]

Is throwing code 22 VTEC pressure valve

[dorikin]

reason is because OBD1 ECU's and Engines have a VTEC Pressure switch

OBD2A engines like your EK4 don't have it

IIRC there is a so-called bypass method, you'll have to look it up tho as I don't remember how its done

[rally-spec]

Okay, makes sense, thanks. But from what I can see in the engine bay it looks like it does have a vtec pressure switch? I can take the plug off and there's oil inside.. Same on my obd0 b16a in my ef9..

[dorikin]

post a pic of your EK4 vtec solenoid

[rally-spec]

Nevermind, I was looking at the plug lower down, here's a pic just to be sure anyway

Found a few tutorials on making the ecu bypass it will give it a go tomorrow

[dorikin]

lower one is ECT sensor



vtec pressure switch looks like this

[rally-spec]

Jumped 2 wires on the ecu plugs to bypass it looking for the vtec pressure switch and everything works now, should have done this years ago, such a difference compared to the p73 ecu! The car finally feels good to drive just like my ef9, vtec engages earlier, way more drive-able now, thanks guys

[ECU-MAN]

don't jumper the wires of the VTP as you will get the code again when you hit VTEC, you can jumper VTP to VTS to get rid of the code

[rally-spec]

I thinks that what I have done, no code when vtec engages, just did exactly what it says here,