Tried a 4th gear pull but it smoked the tyres once boost came on. Then tried a 5th gear pull; no tyre spinning but it started to break up a bit with misfires. Was still pulling strong. New Bosch coils and new one step colder NGK with stock gap (0.030”?). I’ll swap out to new Eldor coils tomorrow and new 2 step colder plugs with 0.024” gap.