it really means what he meant be go faster dosent it, yes it dosent add BHP to youre car but it will make it accelerate faster with shorter gears
or alternatively he may have meant faster in terms of top speed
really the gearbox needs to be matched to the power curve of the engine. Tuned engines although having more power have a narrower power band, it would be good to be able to always have a gear you could select that will bring the power band back in. On my mates S12 he drops out of power when changing to 2nd and 3rd. His max power is 6100 but a rev limit at 6500. He would like a closer box and also increase the rev limit. At 40mph he is too high in 1st for power and too low in 2nd for the power to kick him up the bum. At 50mph he can drop it in 2nd and get to 70 in little time but his 40-70 time isnt too good due to the power not coming in till at least 4500rpm.
