My understanding is that it changes the band lockup points (done by changing the fluid flow)......on a stock tranny they wanted to allow the bands to slip more and give you smoother shifts.....not a problem for heat buildup on a normally aspirated motor. On a supercharged motor you are able to make the bands slip much more because of the huge increase in torque and HP and this slippage creates a massive amount of heat which must be dispersed (and it has no where to go). If you are not a jackrabbit off the line with the new S/C you might be ok, but most have the S/C for just that .......acceleration!!!......so if your going to try to test your 0-60 times.....do yourself a favor and save the tranny from an iminent rebuild and do the mod.
