so ive been having some issues with my engine lately, It bogs down when i first give it some gas then picks up, a few missfires everynow and then.

I have replaced IACV, coil, dizzy module, dizzy cap, spark plugs, plug wires, 3 wire o2 sensor.
and i adjusted my tps.

I was trying to find the problem the other day and felt that one of the relays was warm, i unplugged it and the car ran 10x better but i got a SES. i went and bought a new relay and got better but still does it. when i unplugged it that time i hooked my laptop up to it and got codes 43 ESC failure and 33 MAF high. could the sensors be bad?

my car is a 89 trans am, came stock with a 305, i put a 350 in it and got a chip from tpichips.

I never replaced the 5.0 esc for the 5.7 esc. or knock sensor.
Swap was done about a year and a hlaf ago.

as stated above when i unplug the relay it runs like it should with a fast throttle response and starts right up.

ive narrowed my problem down to either : Bad MAF, BAD ESC, BAD KNOCK SENSOR or a short somewhere along the wires.

What could it be? thanks in advance

 

anyone??