TurboIntegra

I have a p28ecu with Hondata 2b. Vtec is not working properly. It will randomly work when I start the car sometimes, then it will just stop kicking in.

Sometimes it works, and sometimes it doesnt. It is weird.

I have checked:

Oil level is perfect
Normal operating tempature
Vtec valve works when 12V are sent to it

So what else can I check for? It works very speratically. I am stumped. Any Ideas are greatly appreciated.

Spunkster

Try resetting the Hondata. To do this hold the button in and turn the key to the on position and hold it for a few seconds, then turn it back off. See if that resets the interface box. Did you have to run any additional wires for VTEC in this car?

TurboIntegra

Which button do I hold? Is it on the blue box? Because I have no other buttons for hondata.