O2 sensor sounds like a wiring problem. See FSM for schematics, connector pinouts, wiring routing, &c. A tune is pretty much required when modding both intake and exhaust.
The problem on the ramp may be fuel starvation if you were below a quarter tank or so and enjoying the lateral Gs. Lot's of threads on this site about this problem.
Last edited by SouthArk370Z; 09-21-2015 at 06:51 PM.
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