I am getting ready to get my computer done by madz28. But I was wondering what KNOCK RETARD DESENSITIZING does?

Also, with my automatic trans, im wondering if changing the shift firmness will effect the tranny in any bad ways?

 

it does just that. makes the knock sensors less sensitive to 'hearing' knock. changing shift firmness will only have a bad effect if the tuner sets voltage too high and burn up the solenoids. raising line pressure is a good thing. the firmner the shift, the less slipping the clutches do until full engagement. and also reduces heat build up.