If you have a honda converted elise then the old stack rev counter scale stops at 8,000 rpm. Also the high revving nature of the honda means the needle is often down the bottom of the stack - harder to see.
The obvious solution is to fit a shift light system - lots of honda elise converted cars use the OMEX two box solution (its neat and works quite well).
If the unit draws too much current then there is a possibility of it tripping up the ECU, the OMEX seems to suffer from this problem.
I have a Omex shift light in a S1 SC Honda. Hondata KPro ECU.
We were fighting for the last two weeks with ignition cut outs over 6000 RPM. I blamed the Map (the SC is new) and the mapper blamed a drop in fuel presure.
So we changed: fuel pump, filte, preasure valve, additional fuel pump and: it worked.
Diagnosed fault: additional fuel pump and preasure valve.
I took the car for a testdrive home (1100km) everything fine, except my shiftlight did not work (happens, so no worries).
I connected the shift light yesterday and ... the ignition cuts were back exactly at 6000 where the first LED starts. So after one evening of swearing and thinking, shiftlight out and. Everything fine again.
The KPro ECU seems to be quite picky if the signal for the speedo gets mixed up. I estimate the shiftlight pulled the signal to ground when the first LED comes on which confuses the ECU who in turn shuts down the engine.
£105.00
