Rev limiter peculiarity

[Dirk Schooner]

Bruce, I understand (know) it is possible to fit a unit external to the ECU, which requires splicing into 3 wires, you should be able to find the info online on this.
It does not change mapping, only removes the speed limit so it will go to 160 KPH.
Take a look at 'HKS Speed Limit Defencer - Type 1' you just need the correct wires from ECU, I think 12v, earth and the speed sensor, you also need to set the dip switches for honda.

[fxdlidon]

You can actually do the same with an electronic speedo converter spliced into the ECU speed sensor feed. It just gives the ecu mph rather than kph pulses so the limiter will cut in at 140mph instead of 140kph - if you can get a Beat to do 140mph please tell us how . It doesn't affect the fuel map as, I'm fairly sure, it only uses the speed sensor to detect whether the car is moving or not (for the neutral time out) rather than using the speed to change the fueling.
If it did anything else these speedo converters wouldn't work as the signal to the ECU comes from the speedo not, as it appears on the schematic, sensor-ecu-speedo. The wire itself runs past the ecu, up to the speedo, then back again. The signal wire doesn't match the colour in the wiring diagram as it's screened, I think the outer sheathe is white (there are 2 screened wires running there) but the core does match the colour in the wiring diagram.