I have a Honda Civic Type R (2002) which started to bog down under hard acceleration and took longer to start than usual when the engine was warm. No EOBD fault codes were displayed and as it was fine when cold, my first thought was the O2 sensor. Live data was looked at and there was a problem with the pre-cat sensor which was replaced. This did not fix the issue, however, after running it a few times it seemed to be getting worse and the engine management light came on. An diagnostic scan listed the TPS which was replaced and calibrated. This has still not fixed the issue and now the car struggles to start when cold and there is no power at all when trying to pull away. I have removed the fuse to reset the ECU which has made no difference at all. There a few joints on the exhaust that are blowing but it shouldn't affect it when cold as it is in open loop mode. I plan to check the plugs, head gasket and fuel filter next. Has anyone encountered this or have any suggestions?

 

Did you replace with OEM sensors or after-market?

 

^ OEM sensor all the way.

Also, try asking in the EP3/RSX section, you'll get more help there.