Afrs to high 20+

[Gwillie450]

Ran 80 + notice oil cooler pisser not flowing water . Fixed it now only runs 73 checked the mapx tuner data logger afrs are 20.4 running way lean . Changed the map sensor now afr is 15
any help would be appreciated.

[ptscon]

Bad O2 sensor, the engine would not run at 20 and would most likely stumble at 15.

[Green Hulk]

Ran 80 + notice oil cooler pisser not flowing water . Fixed it now only runs 73 checked the mapx tuner data logger afrs are 20.4 running way lean . Changed the map sensor now afr is 15
any help would be appreciated.

Your engine would melt down if AFR's were 20. You will also destroy your engine at 15 at WOT. Be sure to calibrate a new 02 sensor.