I'm preparing to add 2/4 servo from an 2005 Vette. Always use a servo from the same year Vette as Your H2.
Also go to vacuum modualtion instead of the electronic that comes on H2. You get much better line pressure which means reducing band slippage greatly. Tranny lives longer now.
If most SC allowed You to tune with a programer it may be possible that You could tune tranny after these mods but, because the tuning they give with kit does not allow it anyway You are doing tuning by changing servo's etc. For instance the Magna Charger superchips does nothing except download the tuning that Magnuson wants You to have and the tranny adjustment is weak enough to slip the bands to ruin tranny early in it's life. It will not even let You change tire size on the cookie cutter tuners that come with most SC. They make adjustments in small amounts holding back quite a bit of perf. that is still left their for You to get. By adding the changes to the tranny You are helping tune it when the pocket tuner will not.
That is why I'm making the changes as it will not affect that tranny adjustment from kit tuner because it does not let You tune tranny anyway. You will be tuning tranny with these mods since programmer does not.
If You use a tuning software like HPTUNERS You make the changes I mentioned and then You take advantage of the added shift pressure and line pressure with the software and many more changes as it will allow You to actually adjust tranny to take advantage of the better perf. mods You created with 2/4 servo and vacuum modulation.
So get Your forced induction, buy a great tuning software program You can use on Your laptop and get anywhere from 40 to 80 more HP with like gains in torque. It does not sound like leaving much on the table but, I have run the superchip and then My tune with HPTUNERS and that much gained makes big difference. Plus it just toughens the tranny up by letting You program the tranny more than the pocet tuner does.
I hope I have helped. I have been ill and still am so if I have confused some please PM Me and forgive if I messed up some.
TAZ
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05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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