I have a phase 1, 1.2 clio and it has been running rich for a while now. i have a piper x air filter, de-cat and big back box. i have changed the lamda sensor, air temp sensor and water temp sensor and its still running rich. i know its running rich because it back fires on the over run, spark plugs and exhaust is covered in soot and so was the old lamda sensor. can anyone help me solve this problem. thanks
Last edited:
