I have been told that if u run a boosted m8 at 1000ft eventually its going to blow. But if i ran av gas and turned boost down to about 4 lbs i should be fine dont you guys think? Any opinions would be great.
More octane is never a bad idea but turning down the boost is a band-aid just add more fuel. You should have a wideband and/or egt's to help you with your tuning.
I run straight av gas, put on as many miles up there last year as I did down here. 8-9lbs of boost, no issues. Other than its a little harder to hold on down here! Just watch EGT's as I'm sure different turbo set ups run differently!