savemice Posted February 15, 2017 Report Share Posted February 15, 2017 I have a 2011 MKS Ecoboost with a Livernois Stage 4+ that runs on 91 octane. I've been running this for 3 years all year round now and have yet to be beat by an SRT8 markssho 1 Quote Link to comment Share on other sites More sharing options...
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