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Honda
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you could prolly run 87 octane on like 5-6psi....if the tune was good enough. I wouldnt do it though.

im running 93 octane!
 

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96dx saloon
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double post. i would do a conservative tune just incase you get some shitty fuel. there is no need for a max effort tune in a dd. you dont want to be walkin
 

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Haha, E85 is definitely not the same as 85 octane fuel.

But really, just talk to your tuner and see what he recommends, but I guarantee he will say to run 91 octane. If he is a good tuner, I'm sure he *could* tune for 87, but it's not worth the risk.
 

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What's the lowest octane everyone is running? we got 87 to 91 here in NM so in that case could I run more psi to achieve a 180whp which I believe is the most a stock D15 bottom end can hold.
dude for real you dont have anything better than 91? and i thought down here was bad. look around i bet some stations have better than that.
 

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the MAD scientist
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E85 FTW!!! I wish we had that in NY :( I'd be running 15psi on my stock block.

Get some big ass 1000cc injectors. You're gonna need them.
 
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