Thread: fault codes and possible fix

after many months of sitting my ve is finally in my car, my set up is
sr20ve (stock cams and internals)
adjustable fuel pressure regulator (40 psi)
p10 tomei ecu revs to 8.5k rpm (was using p11 ecu without any faults)
greddy emanage blue
22680-2j200 p11 rr-sr20de MAF
stock ve header into 2.5 mandrel bent exhaust
the car is a n15 pulsar (not sure if this info adds to anything)

the trouble is the car revs ok with the p11 ecu but redlines at 7.2k rpm
after changing over to the tomei p10 ecu, the MAF signal was calibrated with the greddy emanage and the fuel and ignition maps fine tuned. it drove ok for about thirty minutes pulling really strong (felt like the rr motor on fifty shot of nos). paused on the tuning, came back to the car a day after the car began feeling limp between 1-2k with some bucking, crossed over back to p11ecu everything was fine came back to tomei ecu it was fine but began throwing codes 12(MAF), 21(ignition signal), and 34(knock sensor). crossed back to p11 no codes came back to tomei ecu same codes recurring. SO.....

My question is could the knock sensor be bad if so why is the p11 ecu not reading any of the codes?
, could it be that the p10 ecu needs to be reset or is the ecu malfunctioning?

if so how is this done and if this is done how will it affect the features such as rev limit and no speed cut?