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Discussion Starter · #1 ·
Any California folks running the stage 1 91 map? I would like your feedback. When I ran a cobb stage 1 back in 2015 on my then 2015 WRX, my DAM dropped all the time and never climbed.

I now have a 2018 WRX and was wondering if any Cali folk could let me know their experiences with the MAPerformance stage 1. Every thing I have read states its the best, but most of those folks are using actual fuel, 93.

Thank you.
 

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Happens to me too, it's because of the crap 91 octain we get in AZ/CA/NV. Only way to avoid the DAM dropping is to run 3-4 gallons of 100 octain with every fill up or use octain booster.
 

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if you DO try 100 octane, make sure its UNLEADED or you will ruin your cats. Most race gas is leaded or low lead
 
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