After entering the results on Excel, here is a summary from the accelerometer datalogging (mainly from 40-100 runs, power estimated at 10mph intervals)
Baseline: car running stock fuelling, stock boost and no WI
Stage1: fuelling trimed to an average 12-12.5 AFR, 7psi extra boost, no WI
Stage2: as stage1, with 0.5mm nozzle injecting at 13psi boost (when both turbos are singing)
Average bhp gains from Baseline to Stage1: 10.36%
Average bhp gains from Stage1 to Stage2: 7.85%
Timewise, on that particular stretch of road (not totally straight and slightly uphill perhaps) 40-100 through the gears, same way every time:
baseline: 9.94secs
Stage1: 8.61 secs
Stage2: 7.97secs
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