Richard Holdener starting to doing some 2.2L DODGE TURBO dyno testing.

YY1 said
Dialing up the boost or an over-boost controller made a LOT of improvement on those 2.2T cars.

Real easy and cheap, too.

Up to 15 PSI of boost then the MAP sensor was maxed out. If you wanted to go higher using the stock computer you had to add fuel.