Ah so it just shows turbo boost, and the thinner air leaves you with a bit less boost ? well i did a few 3rd gear pulls up highway 50 but i couldn't watch my guage the entire time . didn't ever see that .1

I did see about .09 ish but it felt good and fast lol and yes i noticed a taper off at about 5500 . so is there no point in pushing it past 6k ? Sounds like i should ask subaru at my next service ... i'm at 12,200 so 15K is coming up.
When looking for the boost amount in the manual, I did notice how many times the owners manual mentions 93 octane specifically. the manual only had one entry about using 91 as a substitute, but the wording definatly makes it sound sub-optimal . so i added some octane booster after i reset the ecu , it does feel more powerful now. (maybe just the added octane though?) i bought like 6 of em at wallmart so i'm gonna use 1 per tank for how ever long that lasts. and see what affect it has on my mpg after a few tanks . @ 1.97 on top of a $37 fill up it won't have to help much to be worth it. will this make my engine run significantly hotter?
thx 4 the info