Well, gauges are in. I found a used CTS2 and ordered their 12v power cord. (They are usually power by the OBD2 port)
Only had time to take a 15 minute test drive. The factory turbo seems really slow to spool and I can't get over 5.2psig of boost!!
Most of time the truck is in NA mode.
Highest egt was up a steep hill and hit 1188.
I made a little video, but I don't know where to host it so here is a screen capture of my max boost on a flat pull in 4th gear.
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Please excuse my ignorance, but where does the CTS2 get signal from for boost and the other parameters?