Sea Level vs Altitude Tuning

[soutthpaw]

Ok so I was right on the Timing, I remember reading something about someone doing dyno testing in Boulder then they went back to the flatland somewhere and said they had to retard timing 5 to 10 degrees.... that seems like a lot to me but who knows. So I want to add fuel for the low boost to try and help it spool up quicker... guess i need a different turbo and injectors.... Ill wait and see what Bill has to add... Having been at Edge in Utah he must have had an opportunity to work with some high altitude tuning