Hondata

Good point - the PRA ECU does not have a serial output. The reason why the PRA does not have the serial output like the PRB is that the PRA flash memory is 99.9% full, and there is no room to add any extra features.

The Race Technology box translates the ECU output to that which the DL1/Dash can ...

Serial Output

The K-Series ECU can be configured to output a serial stream for a datalogger.

Note that only PRB calibrations support the serial ouput. PRB calibrations may be used in PNF, PRD, PRC and PND ECUs with re-tuning, but cannot be used in PRA ECUs.

Are you using a PRA ECU ? Im ...

John

I beleive the sensor is a standard 4 wire - for the UK ECU - PRA its deffo not wideband !

There is no relay for the PRA - its direct wired ..

You should be using the stock FPR. K-sereis engines run at a fixed fuel pressure. Unfortunately this does not fall in to the Hondata area of expertise. You may want to contact your tuner for assistance with this.

This is a Type R K series with JRSC in a Lotus swap - but you answered it - fixed ...

Should my Adustable FPR be just set to say 53 PSI and have no vacuum connected ?

At momment I have it set at 53 PSI on idle with vacuum disconnected and then connect vacuum.

On light throttle overun my pressure drops to 20 psi or so, on WOT its up at 60 psi but the low pressure on overun means ...

My calibration File is HERE

My datalog is HERE

I have an EP3 UK Civic Type R K20a2
ECU is Kpro (non US version)
Mods: AEM CAI, Decat pipe (OBDII disabled), Hondata inlet gasket OEM non wideband 02 Sensor

Problem: From cold and at a certain point away from when i leave my house, the car judders ...

I have a Euro Type R with PRA ECu in a Lotus Exige - HAve fitted a JRSC with 650 cc inj and 9 psi pulley.

Can I use the RSX calibrations to start it up ? I notice the o2 sensor setting is different and cant see how to modify the RSX cal to the Euro o2 sensor ..

Thanks

AltF - alternator field, measures the amount of current the alternator is providing.
AltC - alternator control, used by the ECU to control the output voltage.
AltL - alternator charge light, used by the ECU to send the multiplex signal to the dash that the alternator is not charging.

On the JDM ...

As you have found, there is a difference between the JDM/US and Euro harness. The wire is wht/blue. Where does this go on the Euro harness?

It goes to the ECU "B" connector pin B10 - so into the ECU .. - see diagram below which is exact how my loom is

The alternator has 4 wires ( plus battery ...

Thanks Mark - its not too late I've got a lot to do ..

The engine is going in a Lotus Exige .. the instrument cluster is an SPA system and the charge lamp is wired as "normal" meaning the alternator earths it when not charging.

According to the Hondata information the "L" connection is on the ...

I have been following the K20A engine swop wiring diagram but get stuck at the alternator charge lamp.

On my harness ( European Civic Type R ) there is no connection on pin 8 of the Engine harness. There are 4 wires from the alternator - one is +12V and the other 3 go to the ECU plug B - White/blue ...