Kpro4 wideband lambda
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- Posts: 48
- Joined: Thu Aug 09, 2007 6:06 am
Kpro4 wideband lambda
Can you explain more about the new wideband lambda in the kpro4?
Can we use like a bosch 4.2U to a narrowband ecu? Like the PRA?
"Better wideband support
The KPro4 can process a wideband lambda input (either analog or digital) and allow the ECU to run in closed loop from an aftermarket wideband without requiring the stock o2 sensor."
Can we use like a bosch 4.2U to a narrowband ecu? Like the PRA?
"Better wideband support
The KPro4 can process a wideband lambda input (either analog or digital) and allow the ECU to run in closed loop from an aftermarket wideband without requiring the stock o2 sensor."
Re: Kpro4 wideband lambda
What is the bosch 4.2U ?
With the KPro4 you can connect a wideband lambda with analog or digital output to the KPro4, and the KPro4 will send the lambda to the ECU. The ECU can then run in closed loop from the narrowband (PRA calibrations) or factory wideband (PRB calibrations) or from the external wideband (both PRA and PRB calibrations).
eg For a Euro CTR with a PRA ECU and PRA (or PRB) calibration you can run in closed loop from the external wideband.
eg For a US S2000 with PRB ECU and PRA (or PRB) calibration you can run in closed loop from the external wideband.
In both cases the external wideband can be used for datalogging (as it could with the KPro3).
Also in both cases the factory o2 sensor can be removed completely.
We've tried to put the same features in both the PRA and PRB calibrations now, so there is not much difference between them in features, but since the PRB calibrations are designed to run from a wideband sensor rather than the narrowband like the PRA, closed loop operation was better in our testing using a PRB calibration.
With the KPro4 you can connect a wideband lambda with analog or digital output to the KPro4, and the KPro4 will send the lambda to the ECU. The ECU can then run in closed loop from the narrowband (PRA calibrations) or factory wideband (PRB calibrations) or from the external wideband (both PRA and PRB calibrations).
eg For a Euro CTR with a PRA ECU and PRA (or PRB) calibration you can run in closed loop from the external wideband.
eg For a US S2000 with PRB ECU and PRA (or PRB) calibration you can run in closed loop from the external wideband.
In both cases the external wideband can be used for datalogging (as it could with the KPro3).
Also in both cases the factory o2 sensor can be removed completely.
We've tried to put the same features in both the PRA and PRB calibrations now, so there is not much difference between them in features, but since the PRB calibrations are designed to run from a wideband sensor rather than the narrowband like the PRA, closed loop operation was better in our testing using a PRB calibration.
Hondata
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- Posts: 48
- Joined: Thu Aug 09, 2007 6:06 am
Re: Kpro4 wideband lambda
Is it possible to use the oem PRB lambda with the PRA ecu?
Sorry, I meant the Bosch 4.9 LSU sensor that for example Innovate use in their widebandsolutions.
Sorry, I meant the Bosch 4.9 LSU sensor that for example Innovate use in their widebandsolutions.
Re: Kpro4 wideband lambda
A wideband has two parts - the o2 sensor and the wideband controller. They must be matched to work.
The PRB ECU has the wideband controller inside, and will only work with the Honda o2 sensor.
The PRB ECU has the wideband controller inside, and will only work with the Honda o2 sensor.
Hondata
Re: Kpro4 wideband lambda
Does that mean, that we can "target" A/F for closed loop using external WB on PRA ECU?Hondata wrote: eg For a Euro CTR with a PRA ECU and PRA (or PRB) calibration you can run in closed loop from the external wideband.
So for example (setting "Target Lambda ECT Low/High"):
a) run 15,2 A/F for economy while in closed loop
OR
b) set closed loop to be switched all the time ON and run lets say 12,8 A/F allways and everywhere (track car)
Thanks
Dan
Civic Type R EP3:
http://www.honda-club.cz/forum/garage.p ... cle&CID=37
http://www.honda-club.cz/forum/garage.p ... cle&CID=37
Re: Kpro4 wideband lambda
The PRA will use the Target Lambda (low and high by ECT) tables.
The KPro doesn't currently support running closed loop at full load.
The KPro doesn't currently support running closed loop at full load.
Hondata
Re: Kpro4 wideband lambda
Does that mean "it is on the roadmap"? ;-) Thanks for your reply. V4 seems to be worth the upgrade (big step forward! Especialy on PRA)Hondata wrote:The KPro doesn't currently support running closed loop at full load.
Civic Type R EP3:
http://www.honda-club.cz/forum/garage.p ... cle&CID=37
http://www.honda-club.cz/forum/garage.p ... cle&CID=37
Re: Kpro4 wideband lambda
Yes, we'll look at WOT closed loop at some point.
We made an effort to have the same features in the PRA as the PRB.
We made an effort to have the same features in the PRA as the PRB.
Hondata
Re: Kpro4 wideband lambda
Good to hear, keep up the good work!Hondata wrote:Yes, we'll look at WOT closed loop at some point.
We made an effort to have the same features in the PRA as the PRB.
Civic Type R EP3:
http://www.honda-club.cz/forum/garage.p ... cle&CID=37
http://www.honda-club.cz/forum/garage.p ... cle&CID=37
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- Posts: 18
- Joined: Fri Dec 07, 2012 6:53 am
Re: Kpro4 wideband lambda
when you went to this update please???Hondata wrote:Yes, we'll look at WOT closed loop at some point.
We made an effort to have the same features in the PRA as the PRB.
Re: Kpro4 wideband lambda
Will the nitrous outputs on a PRA work with the PRA ecu on kpro4?
Re: Kpro4 wideband lambda
We have not made any changes to the nitrous outputs. These are based on the circuitry inside the ECU and a software change cannot change these.
Re: Kpro4 wideband lambda
For a engine conversion where the harness is to be made, is it better to add wires for the honda wideband sensor or go for a wideband like PLX Gen 4 if one has a prb ecu with kpro4?
Re: Kpro4 wideband lambda
That is really completely up to you. Either should work equally well.
Re: Kpro4 wideband lambda
Got my self a PLX as it is easier to connect than rework the harness. What is the preferred way of connecting it? Analog or digital?