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HELP CEL ON: Rich at idle bank 1 and 2 / Lean under load bank 1 and 2
Can someone point me a direction?
Catless exhaust and tune to avoid cel
Spark plugs and coils is brand new
Replaced also both primaries O2 sensors
Same codes with maf and mafless tune
It has rough idle during cold starts and get back to normal at warm.
The smell at idle is alot more intense than before but i think it is a result of unburned fuel/rich condition.
Check your Fuel Pressure Regulator - manifold pressure reference line.
Likely popped off.
It’ll give the same symptoms.
There’s a few posts on here regarding it.
Have you checked fuel pressure from the pumps? Low pressure can cause rich condition at idle (opposite of what you would think) and then a lean condition on power.
Assuming you have a stock pressure regulator, it should be 3.8bar (~55psi)
If it is out of spec, check the pumps in the tank.
