Hello to all, , recently our GT was upgraded from DLN2.0 to DLN2.6 and AGP and Mark VI to Mark Vie with several OPFLEX packages. We operate the unit in EXTERNAL/REMOTE , VLP enabled with LOAD PRIORITY. We have seen that GT operates in the limit of isotherm (1200 oF) when VLP is enabled. This creates additional heat input to HRSG, increased pressures and temperatures, drives HP desuperheaters to its limits and in the same time does not allow IGV to open fully. When we disabled VLP then we saw a decrease of exhaust temperature in different loads. Do you know which control constants drive the exhaust temperature when GT is commanded above emmisisons compliance mode. Your help is requested.