motor missing at low RPM

[pvracing]

I have a 1991 mustang gt that I drag race with fuel injection with 2 step, msd box,msd coil,stock distributor. when I launch the car it seems like once and a while it will have a miss in the 3000 to 4000 rpm range I have disconnected the 2 step and it still does it once and a while. any help would be appreciated. Thanks


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[MadMatt5oh]

ttt for this guy. Im having the same issue

 

[shttygtstang]

look at the other thread posted this guy had the same prob ill put it ttt