i use an FJO controller for the nos. has a progressive control, high and low engagements and a few other cool features. draw backs are u need a laptop and can be a pain to program at times but had great luck with it so far.
i launch at 6500+ WOT with the nos on too. 1.46 60ft. mind u i have a 9" with 35 splines, a drag sway bar and qa1's out back.
my low engage set at 3500 and high set at 6600. i shift at 6500.
nice to see i'm not the only nut tryin to run #'s with a 6speed and nos

 

spec stage3+ clutch

 

^^^ :d :d

 

I must have mixed ya up, thought you were talking about spraying through the shifts and counting on great shifting only, like I did that one time, lol.

Sprayed the 100% stock motor up to a 280rwhp, dyno sheets available, and now the 408 has been hit a few times so far with a 300rwhp shot, no dynos, but dyno in Sig is with a 200rwhp shot on 408. A good 408 time has not been had yet, that big torque is hard to handle in a six speed (almost hit the wall at 100mph, hehehe), but i will get it this year after my new DP dry goes back on. Not sure where you got the 360 from, tough i will be hitting the 408 with 350rwhp shot, you can take that to the bank, lol.
Robert

 

Not a 6sp but still a manual...

I come out at 6800 on a 2 step through the DFI which has a built in feature that does not let the nitrous come on untill the 2 step is deactivated. The DFI also has limits for throttle position and rpm as other safety features. Then it's through an FJO set at a 20% hit to 100% ramp over 2 seconds with the nitrous set to turn off at 8300 and the rev limiter at 8600. I shift at 8000. It is a McLeod softlok clutch.

Because of the trans we run you can hold it right to the floor with the nitrous on while shifting

Back when it was a 6sp car, I used a window switch set at 4000 - 6200, a WOT switch and a fpss. I would hold it at about 4500 then put it to the floor while the clutch was coming out on a 225 hit and shift at 6500. It was a street twin then.