For cars that are slidy if maxed out, remove weight reduction (let it be on stock), and if its still slidy, then reduce the horse power. Like installing race engine instead pro and so on. I would try: 3/3/3 with stock reduction and street engine
Deadboy i see u never do races with elegy, elegy on full don't slide, I can say, its hard to slide elegy with pro tires, for elegy make just 3/3/3, but still elegy is bad for races like sentinel, becouse this not turning....