Hondata

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. If you leave ur foot on the throttle you lose power and have to take ur foot off and give it some more gas. After 30 seconds or so of this, the MIL comes on. This indicates that the 02 voltage is too high. I have checked the wiring to the 02 sensor and this is fine. Once the car reaches normal operating temperature, I can switch off the car. The MIL switches off and stays off. After doing this the car runs perfectly.

HELP!

CTR_Chris wrote: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. If you leave ur foot on the throttle you lose power and have to take ur foot off and give it some more gas. After 30 seconds or so of this, the MIL comes on. This indicates that the 02 voltage is too high. I have checked the wiring to the 02 sensor and this is fine. Once the car reaches normal operating temperature, I can switch off the car. The MIL switches off and stays off. After doing this the car runs perfectly.

HELP!

I have same problem with a K20A2 swop in a Lotus .. everything else is working fine - any ideas ?

Either the o2 sensor is unhappy with its location (startup time to temperature and voltage characteristics) or (more likely) you need further tuning.

Mine turned out to be a faulty sensor
I replaced with a know good one and now its fine