Boost numbers out of whack?????

[twiz28]

Running a MCX 180 0n a 2009 Nytro. Bought from Ulmer, Allen has been outstanding. Questions as to what others are running. I have Koso a/f temp boost guage that Allen recommended. At idle I'm reading - 5.0 psi, at 5000-5500 rpm it will sometimes read 0.0 but I've seen it read -6.0 as well, at WOT it will read as high as +10 +11. Yesterday started getting err code on a/f when screen in psi mode (main screen psi with temp no.s smaller below on left, a/f smaller below on right) a'f would read err, hit reset stay for few seconds then back to err. Should I just dump the Koso and go with a mechanical boost guage? what about A/F? Hate to be out $500 for the KOSO. I'm always running under 3000ft, should I just go to a manual boost adjust and get rid of the TCV as well? Like to hear what others are running and thier experience.

 

[Dimebag]

I run a hallman manual boost controller, a innovate afr gauge and a digital boost gauge. The hallman is outstanding, and you need no tools to adjust boost. I just reach my hand back and give it a turn.

I run about 9 psi at 4000 ft. Which is what MCX says is the 190+ setup.