My 6 speed classic is mapped for 1.7 bar, which it makes fine in up to 4. However in 5th and 6th it will not make more than 1.6 and will hold that. The car also runs an apexi avc-r, which controls the boost.

Banny

 

What are you using to monitor the boost pressure?? 0.1 bar is about 1.5psi, if your using a capillary/mechanical guage it could be that it is reading low

 

Using the Apexi AVC-R to control and monitor the boost, and it hits target boost fine on the lower gears but only 5th and 6th will not make target boost.
Think I will switch on the learn gear option and see if that helps.

Banny

 

you could try adjusting the start duty upwards a couple of % in 5th to see if that makes it hit target