We have done it in S/ST to SLOW the MPH down and we do it with the Dragster to keep it legal for my son who is not licensed to go faster that 7.50. In the dragster we pull 10-12 degrees out to keep it over 7.50 here in Vegas. In my old Cuda I ran it at 22 total to keep the MPH down a bit mostly for track positioning. It still went 160 that way.

"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"