alright so what should i do i just got my new JDM B18C and yeah they sent a USDM ecu with it and i had to have my car right away and i had the mechanic wire it up anyways and the V-TEC is not kicking in cause the computer and the engine aren't communicating with each other and he said that if i put in a V-AFC then it will fix the problem and i would be able to get V-TEC back and it would run like crap let me know how to fix the problem or if anyone has any suggestions. Thanks

 

what engine did you previosly have before?

i jus finished the same situation if you went from ls to gsr.

there needs to be extra wires that have to be connected to your engine to chasis harness.

and no, you do not have to have a vafc to make vtec work.


Modified by no2unenolife at 3:54 AM 10/22/2006

 

you have the right ecu right?

your chassis harness is probably missing the wire for the vtec solenoid.

any CEL's?

 

well i have a JDM motor and a USDM ecu so yeah if that helps i also went from a LS to a GSR so yeah

 

^ theres your problem

 

well i was told that since i have a JDM Motor and a USDM ecu like one of them has one more vtec sensor i believe the US ecu does so they aren't communicating right and if i get a VAFC then it will fix the problem if anyone knows how to fix my problem that would be great thanks

 

Your LS engine harness doesn't have the extra vtec wire. So you have to run a wire or wires, I don't think you need a VTEC controller, the ecu will control it.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by god.loves.ugly &raquo;</TD></TR><TR><TD CLASS="quote">

your chassis harness is probably missing the wire for the vtec solenoid.

any CEL's? </TD></TR></TABLE>

 

i just finished this swap. you will need to run more than just the vtec wires.
you will also probably need to run the knock, iab, sensors.

heres a link to help you out. i got frustrated myself so i found a shop to do it for me.
check this link out!
http://technet.ff-squad.com/