I have a 2009 Pontiac G8 6.0 with a 7875 turbo I am trying to get this thing tuned. I just switched to the OS 2 bar because I was trying to sd tune on original tune but kept going into reduced engine power on that also. When I switched it to the speed density air mode applied It went into the reduced engine power but did not show it on the instrument panel. The only codes the computer has is the P0103 and a couple for the O2 sensor heater. It usually sets off the reduced engine power when I get into boost. what is putting this into reduced engine its hard to log when you can't get a wot.
G8 step 14 2 bar OS step 9 sd mode man vac boost.hpt