jak2908

iTrader: (1)

I have a basically stock ls1 with an a4 and 3.73 gears and a k&n air filter, this last time at the track i somehow ran a 15.1 and it seemed to hiccup in first gear around 2500 rpm, seemed to someone stall for a split second, didnt do it my second run but i still ran a 15.1 that time too, at around 89mph....last year i ran a 13.8 at 100mph and that was before i turned the pressure up in the tranny...no idea whats wrong, i ended up changing spark plugs and wires the other day and noticed to plugs were loose maybe that had something to do with it, any ideas folks?

Thanks in advance