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Help.. MIL Show ( Vtec Mulfunction)


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Hi...
I just installing G4+ fury and i need to know How to prevent  MIL  show up on the display ( K20A EP3)
the code show VTEC Malfunction ( P1259 ) after I use Fury but after I swap back to OEM ECU everything is fine.
Any Suggestion for How to do the wiring?

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I think you will have to discuss with the installer, I suspect they have done a piggy-back install and the OEM ecu is not happy because they have disconnected the Vtec solenoid from the original ECU.  They can possibly fix it by fitting a "dummy" solenoid or resistor.

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