...if the Ahmed software uses the lamda....then that could be the cause although if you have Version 7 of the pectel software it wont let you rev past 4k

...To check if the lamda is working go to Pin 2 on the ECU...(first unplug the hair brush connector from ECU and take the cover off held on by a small screw on the end)..get a mutimeter and set to volts and with engine running put the red probe on pin 2 and black to earth...it should fluctuate the volts...if it remains constant then you could have a fooked lamda.