We had some nasty DA/Temps last Sat. Normally if I correct my times on dragtimes it bumps 1 tenth off but I corrected it and it took about 4tenths off... So honestly I don't think I gained anything or lost anything. I was also running with more weight than the 12.5 slip, So I'm not totally bummed out/let down by the gears but I have to say was expecting more from the 4.56's