Kpro v2 on a PRA ecu in a DC5 type r

[sabberjoch]

Hi guys,

I'm running a Kpro V2 on a PRA ecu. This is put in my dc5 type r (which has an PRB ecu stock).
Now my o2 sensor doesn't read the volts. So it gives a constant a/f of 14.7.
I'm not sure if it was like this from the beginning, i thought it was reading fine at first.
Do i need and narrowband or wideband o2 sensor for this ecu? if i need a narrowband, could i hook up the secondary sensor?

[Spunkster]

The PRA uses only a narrowband sensor and cannot read a wideband signal even if a wideband sensor is installed.

[sabberjoch]

Ok thanks, so which sensor would i need for the kpro to read it?

[sabberjoch]

I just checked an old datalog. And it did read the voltage of the primary o2 (denso wideband). However it seems it didn't give out an a/f ratio. Voltage was between 0 and 1 volts. At the moment it constantly reads 0 volts, and gives the p135 error code.

[Hondata]

You would have to use the narrowband sensor and rewire the car to be the same as a Euro spec car.
It would be a lot easier to use a PRB ECU.

[sabberjoch]

I'll add the datalog, as you see it does read the o2 sensor (wideband denso) at this point.
At the moment it doesn't anymore, so i guess the wideband sensor has died on me.
Is it possible to use a narrowband to function for the closed loop?
I can always use an external wideband for tuning purposes.

[Spunkster]

As was previously said, you will be much better off just using the PRB ECU in the vehicle and the original wideband will work with it with no wiring modifications needed.

[sabberjoch]

Don't have the original ecu anymore. How much Harm can it do driving in open loop? Not using the sensors At all. I can hook up a separate wideband at my tuner (sneaky tuning in the netherlands)

[Spunkster]

YOu will not be able to run in closed loop using an aftermarket wideband and will only be able to use it for datalogging. IF you upgrade to the V4 K-Pro then you will be able to run closed loop off of an aftermarket wideband with the PRA ECU.

[sabberjoch]

Problem solved, made a stupid mistak. Checked the ecu, it is a prb. The map that was installed on the ecu previously was made on a pra basemap. So it had the pra software. Just used a prb ecu and the wideband works again!