Quick6'n'-K.C. said:
Line lock wont help getting more boost with REAR disc brakes, discs love heat.
Normally rear discs suck as holding boosted brake launches cause they are cold and the car will move,.. they need heat.
I suggest you getting a tranny brake cause on a cold night, the rear discs wont hold any boost and that is why your pushing.
Either do a large burnout without a linelock and see how the results are, or get a tranny brake.
I have a manual t-brake, love it.
Also, timing, tuning and fueling can play a major factor on how well the car spools up, ought to get a nice sig so we know what you have so we can compare notes
BW