tuning question?..

KillaKev702

New Member
Mar 26, 2009
28
0
1
Las Vegas, NV
K so it might seem like a dumb question but I dont know what to do. K so on my SCT when it ask for octane rating it says 87, 91, and premium, well I live in Las Vegas and the best we have out here is 91 premium. So my question is should I tune it for 91 or premium?
 
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