Ep3 k20a2 PRA ecu loss power before and after mapping

[jdouille]

Hey everyone.

Honda Civic Type R ep3 2002 K20A2
37820-pra-e02
kpro v4 47125 official dealers
external bolt on parts
internal stock
Natural aspirated
240ch 230nm

I have a current problems but it's intermittent, before and after mapping and it's not visible on Datalog. When this car don't run correctly have a loss power and erratic idle and she turn rich when presse little throttle, noise and odour fuel in exhaust. I have not passed the Control Technic cause of this problem !!!!

My tuner have make two mapping at differently moment and doesn't see the problem, but mapping at the moment it's ok and turn off the key and past many time this totaly differents feeling !!!!!

Just i see a little composant J240 on OEM Databord maybe durty ? red circle on photos.

New parts:

All lambda sensor OEM parts
Fuel relay
Pump + filter
Fuse
Fuel pressure regulator OEM parts solid to 57psi
Injectors new Acura rdx
VTC sensors
VTEC + VTC filter
IACV cleaning and seals
Gasket intake manifold, exhaust and valve cover
Full timing rebuilt engine and oïl pump
Oïl filter
Sparks plugs
Ignition coils
TPS acuity sensor ok 0.7% to 1.3% WOT
Catalyst and no catalys
Compressions it's ok for four cylinders
Valve clearance ok

fort.kdl

(5.18 MiB) Downloaded 174 times

chauffe.kdl

(8.79 MiB) Downloaded 172 times

2nd map 2020.kal

(162.93 KiB) Downloaded 192 times

[jdouille]

P1002352.JPG (3.79 MiB) Viewed 5709 times

P1002348.JPG (3.55 MiB) Viewed 5709 times

P1002346.JPG (3.62 MiB) Viewed 5709 times

[Spunkster]

Who installed this and what are the blue wires for?

[jdouille]

I buy the Hondata kpro V4 and install to CPL racing official dealer in Angleterre.

Curious blue wire, yes.

[jdouille]

I bought the Kpro v4 at CPL RACING in England who installed it in my PRA ecu. From the start this car works strange performance.

Wiring blue it's strange exactly and the red wiring are correct ? with the Datalog any visble problems ?

[Spunkster]

I suggest you contact CPL racing about this as they should be installing these and testing them. They should also be able to explain the blue wires if they installed it.

[jdouille]

The blue wires are not soldered on the PRA make Kprov4 ?

Do you have photos or a manual showing the assembly to be made on a PRA, exactly !!!

Thanks you !!!!

[Spunkster]

You will need to discuss this with CPL Racing.

I do not know why the blue wires are there.

[jdouille]

Hello.

Kpro will be return to my home. Verdict to diagnostic, it's ok for ECU and Kpro, no problems. He tested my ECU in other car and reprog perfect.

The problem is in my car, mebaye wiring or harnais because the fuel pump relay is very vey hot when engine started and WOT.

Other question, with PRA ecu and Kpro V4 ist's possible just use Primary oxygene sensor for AFR and unplug and delete the Secondary sensor ?

Thanks

[Spunkster]

The PRA uses narrowband sensors and cannot be used to read the actual AF ratio.

[jdouille]

Thank you.

My tuner has mapping my car with this wideband to him.

I just wanted to know if in Misc I could use only the primary narrowband and disabled, remove from exhaust the secondary sensor.
Normaly the EP3 PRA ecu will be turn correctly with just primary narrowband ?

More infos, i have no catalyst.

Thanks

[Spunkster]

Yes you can disable the secondary O2.

[jdouille]

Ok, disable in Kmanager but unplug wiring secondary sensor from exhaust ?

My goal is to use only the first sensor for all time.

Thanks

[Spunkster]

if it is disabled, you can unplug it.

[jdouille]

Today i have a same problems.

I don't understand, i have compare EP3 full stock with my EP3 240ch and he turn very good power !!! compare to me.

I have unpluged and disabled secondary oxygene sensor for just us Primary every time, no change.... There are days it works very well three times in 1 year but most of the time it has no power and nothing in Datalog and no CEL.

Maybe installe an Wideband AEM on Analog enter on Kpro4 ? for totaly delete oem lambda ?

Thanks.