I have no actual experience with the tvt 265 kit, but it seems to me an actual 50hp increase should give you more than a 3/10's improvement in the 1/4 mile.
I mean the NeedsWings CAI (alone) knocks off nearly a 1/2 second in the 1/4 mile, and I'm sure it doesn't create any where near that much of a H.P. increase.