when trying to climb hills and pressing the gas all the way it bogs then let off gas then it accelerates as it should.



changed map sensor, fuel filter, fuel pump, and ecu. spent a lot of money and still not fixed. what could be the problem? please dont give me wise remarks.


thanks in advance

 

Any CEL codes?

What's the condition of the plugs, wires, cap, and rotor?

Is the ignition timing set to spec?

 

what about vacuum lines? air may be leaking when its wide open