My car starts missing at wot going into 3rd gear. When idleing, it starts missing just above 3000rpm. I changed the plugs, 02 sensor at the track because that was what i had to work with at the time. Still missed. then I changed the coil pack, and still doing it. Then I unplugged the mass air flow sensor to see if it would stop missing thinking the computer would put a default reading in for the mass airflow sensor. still missed. Then, I started getting false knock real bad. 34 degrees.(@ idle) So I plugged the mastertech in(scantool), and it showed no knock. I checked the wiring to the scanmaster and all was fine. Then when I brought the rpms up, I started hearing a pinging noise from what sounded like the turbo. It started whistling funny then would make a funny noise and start cutting out again. Almost like it was overboost or something. All that in park at about 3000 rpms or so. I unplugged the ecm wire and plugged it back in, started it up, and the false knock went away. When I was at the track, the 02 millivolts were reading really high when I know it shouldnt have been because I kept taking fuel pressure down, and the numbers would stay the same(over 900) and half the time the scanmaster wasnt recording the numbers from my run. so I thought maybe a computer problem or something. Anyways, I finally got code 42 to show up. I was going to change the ign. module, but I dont want to keep throwing parts at the thing without some help from you guys. It does do this with both of my chips, so thats not it. Maybe you know something to try I dont. sorry for how long this is. Thanks in advance.