Does anybody know how the computer "reads" speed via the OBD1 p28 computer in regards to activating vtec?

Please do not suggest to use an RPM switch - from what I understand, that will only mechanically engage Vtec, but the computer won't change the fuel maps accordingly. I could be wrong here through.

In short, I want to be able to activate vtec in an application with no speedometer/electronic VSS and without throwing a CEL.

I know guys are already activating vtec by bypassing the pressure switch. Curious if there's a simple solution here that I don't know about for the speed aspect as well.

Please advise!

 

Crome,hondata,Neptune whatever don't matter anyone of those will get it working

 

Chrome, check the speedo option.


Posted from Honda-tech.com App for Android

 

Posted from Honda-tech.com App for Android

 

Yes, you can disable it in any tuning software. BUT why not fix the issue?

 

There's no easy way to "fix" the issue. The application (not a car) does not use a speedometer or a VSS. "fixing it" would be by giving it a speedometer/VSS isn't really an option and would be cost and mechanically prohibitive. Thanks guys.