I have a 09 997.1. Mods tubi exhaust 200 cell cats. I notice i only get full bost in 6th gear .9-1.0 (1.1-1.2bsr sport mode) for most of the rpm range on full throttle from 2500 rpm to 6000 rpm. In other lower gears boost reaches max .9-1.0 (1.1 -1.2) sport) but not through full rpm range. It gies to .8 bar (1.0bar sport) Is this normal? It seems it shoud hold full boost in all gears.

 

That's normal. With good tune you should see steady 1.0 ( 1.2 ) all the way.

 

+1 ^^ What Q8 said.. Get a good tune. It will transform the car.