if you are hitting over 15lbs then your gauge is wrong because the pcm limits the boost to 15lbs.

 

Well after talking to the Techs about my Lemon SS they said that the tech book says a minimum of 15 psi to 21psi. Im just curious to see how this works.

If the computer limits boost then why adjust the waste gate actuator? I have heard of people getting more psi by adjusting it. That makes the theroy of controlled boost confusing.

 

did another test tonight, WOT w/Launch Control, spun the wheels a little, just over 15 lbs and it shifted, gear selector in L.
did the passing gear again, I thought I hit 20 lbs the other night, but maybe I didn't, tonight did passing gear @80 mph boost went to 15 and then dropped off and @60 mph boost went to 16 and then dropped off, could not duplicate the 20 (Ithought I saw) the other night.

 

Cool very intresting I think these new cars have to much computer BS on them. It takes the fun out of doing mods yourself and tinkering.