Quote:
Originally Posted by blake11544
Summertime gas is shit haha jk I have no idea I’ll give it a try though.
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california gas and california spec gas basically has more detergents to improve emissions so basically 91 isnt real 91..its slightly diluted.
i'm in new mexico that doesnt follow california standards, but i use costco gas which i believe comes from california or its california speced.
I had timing issues not as bad as your on the 91 oct tune. When i switched to the acn tune i lost a bit of power but no timing issues.
also make sure you have new plugs and coils. New Plugs and coils should always be done before a tune.