this is what i got back of them when i emailed a while ago
Hello, Craig
The basis of the modification is to increase the overall velocity of air that moves through the throttle body, this is done by making very exact cuts to the walls of the chamber and removal of portions that limit the maximum air velocity.
Horsepower is not the primary goal with throttle body modification but rather efficiencies with the intake system and a great difference in the base response of the engine under throttle. Though these effects do make a increase in power, this increase is only a "plus" when combined with the achievement of engine combustion efficiencies. There is a great increase in throttle response, intake efficiency and take off time.
If you are interested in getting the work done just let us know.
Thanks
Pascal
