Bar not Mpa ? 1.5 Mpa would be 22 psi of boost . i'm guessing you are not quite stock ? hehe
ah but you are in truckee. do you see more boost in sac ? sea level ? Could using 91 octane be forcing some sorta knock correction and or my ecu is using less boost to avoid knocks ? (can't seem to find 93 in tahoe, or carson and the owners manual actually says speically to use 93 and states that 91 is an acceptable compramise doens't sound ideal at all though )
well what the heck. ECU reset , added octane booster, gonna drive to carson and back (i want some Del taco anyways) and see if i don't hit that .1 mpa mark on the first few uphills 3500 to 5500 ish on an uphill in 2nd should be enough to tell ?