I think when he says 80-90% he might be right, think about this guys...
when you give it half throttle in 6th gear going 70 mph, your boost gauge will hold 15 pounds fine (atleast below 5500 rpm) floor it, and your car will spike 18-22 pounds and go back down to 15 pounds...same boost your pushing normally...so even if it was 50% throttle the engine would still be seeing 15 pounds but when I look at my gage anything above 5500 rpm is around 9-11 pounds which has got to mean its ATLEAST mroe then 50% throttle...realisticly 75-80%
