highest compression to still run 93 octane
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Would it help to get it setup for E85 which is 105oc? I notice when I run around 65gas:35E85 I get more pep out of my car and it's just stock. There's a guy on here who's pretty knowledgable on E85, and since it's alcohol he's said you'll need to change over a few fuel components to account for this. Like fuel o-rings and I think even your fuel pump. Still though E85, 105oc and 30-80cents cheaper than even 87oc!