I know Badog said he used to. I tried it 2 times. It did make me go faster by like .1 but I think that's only because my normal shifting isn't fast enough. Just practice normal shifting till u can shift in the blink of an eye
With my stock shifter I had problems with shifting to slow. So what I did was I held the stick below the shift nob (right around that adapter piece that attaches the leather to the nob) and that made my shifts a lot faster. I still do that now when i'm racing even with my SS, and I miss less gears too.
My friend powershifts, lets just say he's regreting all of those powershifts right about now. :drink: