719 O2's.. two things. Definetely BAD.
Either your fuel pump/system is taking a dive, or your not spraying alky. One is test the alky kit.. does it stumble when you hit the test button? Does the level on the tank come down.. you know the drill :biggrin: if so.. then test the fuel system.. does it maintain pressure? Does it raise 1 PSI per 1 PSI boost vs Fuel and maintain?
More than likely the 20 year old injectors on the car are probably toast.
The flickering lite means you have issues electrically on the car. Could be voltage drops on the car at WOT.. you now cant supply fuel, injectors get less voltage, alky pump gets less voltage.. see where all of this is going..
Suggestion, turn it down to 14 PSI and get if figured out. Going WOT and seeing knock is not where you want to be, unless you really want to build that new motor. Somethings can be trouble shot over a keyboard.. somethings over the phone.. somethings need an experienced mechanic working on it.
Start on one thing.. go to the next. Two many issues popping up on one post.