K- pro failure following calibration

[Lotusk20a]

Hi i hope you guys can help me - I’ve a k20a in an older lotus and i bought a k-pro from a uk agent , now he loaded a basic run calibration on to the ecu / k pro and the car started and ran - had mil light issue as the k-pro couldn’t see the multiplexor and appeared to lack signal from the 02 sensor ( think he had disabled the 02 return and theres no longer a multiplexor as it doesn’t have honda dash)- the agent sent me a revised calibration which i duly attempted to upload - the pro wouldn’t let me carry out security clear , however i tried to upload the calibration the result the car wouldn’t start and i sent ecu back to the agent .
The agent informed me the kpro was fried due to my wiring ! Ive wired the fuel pump, power and 02 all through relays etc - now the agent is refusing to repair / replace any ideas - wiring is exactly as the hondata diagrams and as i said she ran fine pre new calibration - whole event has actually sickened me !

[Spunkster]

What is the serial number on the K-Pro board inside the ECU? What dealer are you referring to?

It is very possible that if something was wired incorrectly that it could damage the ECU and this would not be covered under warranty.

[Hondata]

Unfortunately it sounds like the agent is correct, and the ECU/KPro has been damaged. It is very common with engine swaps.
How long did it run for? Did the agent say exactly which part was damaged?

[Lotusk20a]

Started and ran for 3 weeks - it was only when i tried to upload the calibration it failed - I’ve checked and double its wired exactly as per the hondata wiring diagram ! I’m using relays as previously stated to control the pump , 02 and the main relay ( the neg from relays is grounded by the ecu correct ! It literally stopped working when i attempted the calibration that he sent me ( in order to remove multiplexor

Can you tell me what the reason the earth on the fuel rail has to relocate to cam cover stud ?

[Lotusk20a]

Unfortunately it sounds like the agent is correct, and the ECU/KPro has been damaged. It is very common with engine swaps.
How long did it run for? Did the agent say exactly which part was damaged?

He just used the term its fried and its a wiring fault - i can hand on heart say it isnt - unless the hondata diagram is wrong , that withstanding it ran perfect just had the mil light on

[Lotusk20a]

What is the serial number on the K-Pro board inside the ECU? What dealer are you referring to?

It is very possible that if something was wired incorrectly that it could damage the ECU and this would not be covered under warranty.

I’d rather not publish that until i get an outcome - i believe he has sent it back to you guys ! PM me if you like to be honest the e plug connections are not that complex are they I’m using the 02 , fuel , main relay control - rev counter pulse , ignition in , euro k20a loom so the charge light is spliced in to one of the other plugs ( cant off my head remember ) like i said everything was fine other than the fact I couldn’t access the ecu parameters to switch off the multiplexor - then when i followed the agents instruction the security clear wouldn’t work and after uploading the calibration the k-pro failed ( he did confirm type ECU is fine ! )

[Hondata]

If it ran for 3 weeks without a problem then I would re-test the unit to make sure. Normally you don't need to clear security before uploading, so a good starting point would be to try to upload a starting calibration.

[Lotusk20a]

If it ran for 3 weeks without a problem then I would re-test the unit to make sure. Normally you don't need to clear security before uploading, so a good starting point would be to try to upload a starting calibration.

Could you tell me what the coil impedance of the three coils should be - as this is really the only variable I can see ; I understand that if you apply raw 12v to the main fuel or 02inputs this will fry the ECU -I’ve used standard 30A relays which have an impedance so shouldn’t effect the ECU think I read somewhere if your not using a main relay then a resistor of 1k ohm should be used - these relays are greater than that .
I don’t want to plug the hondata in again and it go pop , wiring is all as per the hondata diagrams - I’m using a rev counter reworked by Spyder engineering ( converted to rvi from roc -maybe the other way around I can’t remember but to work on electronic pulse ) again it all worked it was just when I put the calibration in it all stopped functioning ,

[Hondata]

What is the serial number of the KPro?

By coil impedance do you mean the relays? In that case rather than impedance you probably mean resistance, in which case anything over 80 ohms would be normal.

[Lotusk20a]

What is the serial number of the KPro?

By coil impedance do you mean the relays? In that case rather than impedance you probably mean resistance, in which case anything over 80 ohms would be normal.

Yes exactly that the relays coil resistance thanks - so 80ohms above is fine thanks for the information

[Hondata]

What is the serial number of the KPro?

[Lotusk20a]

What is the serial number of the KPro?

I’m not really going to publish that information until I ger resolution with my agent - why do you ask ? Is it relative ?

[Hondata]

We want to know the serial number so we can help you. If you change your mind, email support@hondata.com