Well my first ?? is I changed the 2004R out, and added a TH350. How will the ECM know that trans is in there? I have a TTChip. Do the ECM look at the gear selector, or get signal from inside the trans? I made the mistake of changing to much at one time like(Dual walboros(1is unplugged, and then adding a TH350) The car using the Scan master, is acting crazy at 1/2 throttle falls on is face, and sometimes back fires. I had the alky chip in, and the O2s are dropping to 070-066-000 but I was thinking it was rich being the scan master can only read up to 999 then it has to go to 034 to start over right? So I take the alky chip out, and install the 93street chip, and it does the same thing! What am I missing?