ok My pr3 ecu is flashing code 23. I know this is the knock sensor code. my ecu has been chipped with a mugen chip, The car running fine. I know with out the knock sensor the engine suppose to run ruff and maybe even miss fire. With it flashing the code 23 how come it isn't actually running like its the knock sensor, also i was told the mugen chip disables that sensor. Whats really going on here?