Yeah we only have 87/89/91 and I just paid 4.02 for a gallon of crappy 91oct... I am not a huge fan of mixing octane boost! You gotta love California...Just come to the east coast. I haven't even seen 91 over here. Only 93/89/87.
High Altitiued or the 91oct map? The ACN 91oct is nothing to write home about... no real change in power, but a much safer map than the OEM map.Since the high altitude map from perrin isnt available, can anyone tell me how they are liking the regular OTS cobb stage 1 map?