Originally Posted by Kato

Don't increase boost without a tune. This is a recipe for a new engine.

Any tunes, make sure the AFR's are from a wideband, not a factory narrowband logging to a virtual dyno.

Avoid trying to get the same power as a USA dyno. They have 'Disney Dyno's' where everything is make believe. Every dyno is different, just use it as a tool to look at what gains you have made. People get fixated by the final number, but if a USA guy makes a 20hp gain from factory to get a 300hp car, you make a 20hp gain but the dyno says it is only 280hp - you both have the same end result.