HELP!Check Engine Light

[blackstanger95]

Stangs runs like crap, above 4500rpm it will make a popping sound(maybe detonation)just replaced fuel filter and nothing.
My code reader brought up these codes:
1)181-Fuel system at rich adaptive limit at partial throttle/system lean.
2)189-Fuel system at rich adaptive limit at partial throttle/System Lean.
3)565-Canister purge selenoid circuit fault.

Can anybody tell me how to fix it.

 

[eagle87]

Both 02 sensors need to be changed or you have the wrong fuel pressure. you can check both. tha can purge solinoid has a problem you can change that out auto zone. your problem after 4500 is your o2's I'd look into that first...

 

[blackstanger95]

eagle87 Iforgot to mention a have an off road h-pipe does this matter.