Just bought a used Gryphon....

[Jackpine]

OK, now we're getting somewhere. The OD behavior you would specify in your custom tune request. You can also do a lot of that yourself by adjusting the part throttle up/downshift and torque converter lock/unlock points with a Gryphon. Virtually any programmer should reduce the terrible downshift lag you describe.

I doubt there's any performance advantage in the exhaust though. (But I imagine it sounds and looks nice.)

- Jack