I was wondering if anyone is experiencing any kind of hesitation under full boost around the 3200 rpm range. It seems to happen only in the higher gears only, and under full throttle. Also lately the car feels very sluggish sometimes after some hard full boost runs. I am still getting between .8-.9 bar, and sometimes 1.0 bar. If there was a boost leak, would I see any lower bar measurements? Thanks everyone.

 

It is possible the gas you are using is not that great. Octane is not consistent even though they would like it to be, the humidity is high and ambient temperatures are high. The hotter it gets the more the system will retard and pull back. The humidity being high means there is more water than air going into the intake. These things will make the car sluggish or feel like the RPM has a hesitation in it. This is the system keeping its self safe. It is possible you have a boost leak, but your levels are not showing it.

 

At one time my car did something similar and it was a boost leak in the plenum. My boost was going to 1.3 bar but it was not maintaining because of the leak. If your car does not hold that maximum boost for a few seconds , changes are you have the same problem which makes you loose lots of horsepower.