My car is running lean
I've noticed lately, my car has been running lean. Could this be due to the lambard censor? I've checked the pipe work for leaks, unplugged the AFM and engine stalls, checked the spark plugs, and it does look like it's running lean. Any ideas? I've fitted a K&N panel filter, have an open mouth down pipe and a standard ECU (not chipped). Would it be possible to have a lazy lambard censor? Just one more thing, when the engine is hot, and I let it idle for 2 or 3 minutes, the air/fuel ratio gauge will start going up and acting normally. Have I missed something?
Any advice greatly appreciated.
Thank you