The only way to get through the turn when in an understeer situation is to get off the gas and stay off it. Any throttle will push you higher towards the wall.
With an oversteer situation you need to be on the throttle and then "chase the rear end of the car up the track". Neutral or a slight oversteer is the fast way around.
On a track like Phoenix the fast way is to stay on the bottom. If you give the car behind you an opening he will stick his nose in. So, you stay off the throttle enough to stay on that bottom line. On these one groove race tracks you see a lot of flame because everybody is defending the bottom line.
The faster/best handling cars will generally show the least flame unless they are trying to lap a slower car. Then they have to get way off the throttle and they show flame too.
