Throttle stopping injection

[art leong]

I was just going through this thread. This is for a totally different application. I have a electronicly controled 4 cylinder using LS1 coil over plug setup. I tried using a 2 step that was setup for the LS1 coils. It did what it was supossed to it held the motor at 4200 on the starting line, but the car was off 2 tenths in the short times (compared to just putting it on the floor and using the transbrake, same rpms).
I also developed a lot of blowby when using the 2 step and damaged one of the plugs (broke the porcelain).
I was wondering if the ecu was giving the motor full fuel while the spark was being knocked off a cylinder at a time.
When I read about your fuel problems with the throttle stop. I wonder if the problems aren't related?