Someone asked above about locking out the distributor, that is not an option as the Hall effect distributor is non adjustable. Timing is verified by locking timing At 12* and verifying with a timing light. After verifying, timing is unlocked and the computer takes over. I have discussed with tech support multiple times and that conversation is a waste of my time as I believe a lot of efficiency is left on the table with the limited timing with no explanation as to why this backfire occurs.