Quote:
Originally Posted by nikitopo
The only issue I can see with this engine is the higher compression ratio (13.5 vs. 12.5), which it could affect performance more with lower quality fuel. Such compression ratios were used in the past mainly in racing applications, where someone had access to racing quality fuel. It looks they went into that direction to extract the best possible performance figures under this displacement level and latest emission regulations. E85 and Flex fuel kits could be a solution for those having access to such type of fuel. And of course the worst option would be to supercharge such a high compression engine ...
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I bet it's still fine running on 87AKI. It may be optimized for 91/93 but I kinda doubt that being that the US public has such an aversion to using higher octane fuel for some reason. We'll see I guess. I'm excited about the C/R bump, I always run 93 in my cars anyway since they all have at least a 93 Octane tune on them anyway.