1-3 gear?

Fat_Robi

I may be wrong, but...
Sep 7, 2008
232
0
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Las Vegas, NV / Provo,UT
I just ordered a lift pump today from alligator and want to put in a hot tune to test it out. I know the higher gears 5-6 and maybe 4th don't hold up to 500 HP or so but how do the lower gears do? I will not run the tune for long, but just enough to beat my brother in a race that will probably not go past 3rd or 4th gear. What are your thoughts? Will I murder my trans? or should I be OK?