Significantly Limit Power?

[shakinlm7]

I'm sure I'll get flamed but hear me out! Just looking to temporarily slow my truck down :D Whats the easiest safest way to significantly limit HP/TQ via tune. I've tried playing with the TQ Limiting Parameters and thats not doing the trick. Truck is a 2002 Sierra 6.0 with a t56.

[wait4me]

Simple just pull Lots of timing, turn off pe, And if it was a electric throttle car, then you could have just pulled alot of throttle vs pedal.