Error code 17 VSS

[ga's ek9]

Hi. I was wandering if anyone could help me. I've just completed a high compression b18c. Im using a hondata s300 and since fitting s300 I keep getting Error code 17 - vehicle speed sensor fault and vtec wasnt engaging. After turning engine off and back on the light goes out, for a little while. I plugged s300 into laptop and noticed the vehicle speed wasn't coming up on the Smanager so I changed the vtec minimum speed to 0mph and vtec worked but still kept throwing the VSS code. The instrument panel speedo still works. Its is a 2000 jdm ek9 (obd2b) and hondata s300 pre-socketed obd2b ecu. The vehicle has been fitted with km/h to mph converter by previous owner. Is it the case that I need to remove the converter for the S300 to recognise the vehicle speed? Any help would be greatly appreciated.
Thanks

[Spunkster]

YOu need to determine where in the wiring the fault is that is not allowing the ECU to get a VSS signal.

[ga's ek9]

Ok thanks. Im getting signal to the cluster as the speedo is working. I wasnt getting the code with old pct ecu so does that mean the converter is sending the wrong signal for s300? Thanks again