ok before i say anything i will tell you that i have searched the site up and down and still had no luck!
I just did a swap into a 93 prelude that was an h23 and i installed the allmightly h22 and ecu both are jdm used parts... as the topic reads i have no vtec and have a 6500 revlimiter but no codes or C.E.L.! I have done all the wiring double and tripple checked the harness and pins, and have even gone to the extent to run new wired to the solenoid and switch...I have tried 2 other p13 ecus and no luck but i can use a p72 ecu and the rev limit is gone but still no vtec. This is the 4th swap of this kind that i have done and never had a problem like this. Could there be a pinout difference somehow in the harness? I am lost......... any help or ideas will be appreciated

Blake

 

heres this ...
https://honda-tech.com/zerothread?id=828297

and that one will lead u to this one...
https://honda-tech.com/zerothread?id=164863

good luck, keep us posted

 

Have you tried using a prelude vtec harness??

 

pressure switch, oil pressure?

 

he said he ran those wires himself

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zensoku207 &raquo;</TD></TR><TR><TD CLASS="quote">he said he ran those wires himself

</TD></TR></TABLE>
ok great, did i say the wires to the pressure switch? i said the pressure switch, which could be bad not allowing vtec to engage, or could be a bad vtec solenoid. Make sure the screen isn't full of **** not allowing the oil to flow correctly

 

It's wierd theres no vtec, but you still don't get any celly cel's.