Hi everybody, case is i did auto to manual swap on my 97 ej8 coupe and left auto P2P ecu, it is still throwing some codes of auto tranny solenoids ar not connected, i feel that car won't run as it should, the question is: does VTEC engages when ecu is throwing codes?

 

no, if you have a CEL vtec will not kick in

 

You should use an ecu for a manual tranny. They arnt expensive 15- 50 bucks

 

not true... i have a CEL and vtec engages as it would normally

 

who should i belive......

 

just talking from experiance... this is with a b18c and the vtec engagement is very noticable.. if its not vtec then i dont know what is..

anndd a video to back up my claim

[youtube]http://www.youtube.com/watch?v=bAGqRBUadAU[/youtube]

 

you can engage vtec, depending on the code. Put most codes you really can't engage.
being that you are having codes for the auto tranny, it will not engage.
i'm pretty sure you already have tried though.

 

i measured voltage at the ECU VTEC pin and it shows 12v only on 7000 RPM, not on 5300 rpm as it should, but after 7000rpm! ****, i can't understand anything
one more: i've disconected vtec valve solenoid and vtec pressure switch connectors and engine accelerates as before, but scuks on 6000 rpm, the car is heavy like it has D16Y7

 

i measured voltage at the ECU VTEC pin and it shows 12v only on 7000 RPM, not on 5300 rpm as it should, but after 7000rpm! ****, i can't understand anything
one more: i've disconected vtec valve solenoid and vtec pressure switch connectors and engine accelerates as before, but sucks on 6000 rpm, the car is heavy like it has D16Y7

 

There are only certain CELs that will cause VTEC not to kick in.

VSS
CTS
VTEC
MAP
possibly IAT
TPS
And RPM related lights.

Your car is probably having an issue with the automatic ECU being in there. The automatic ECU may tie VTEC in with some sort of gear sensing. Or the VSS signal is different. I'm pretty sure that automatic VSSes are different from manual ones.

Go get a manual VTEC ECU and see what happens.

 

i checked manual and VSS are same, anyway, i need a manual ECU, manual intake manifold, manual IACV, or i will take P28 ecu and chipp it!

 

You do need the manual IM and IAC. You also need a manual ECU. Even with a P28, you'll need the manifold and IAC.