dyno differences between 92 octane vs 114?
dyno differences between 92 octane vs 114? has anybody done a dyno test with the n2o useing 92 pump then 114 race?, I'm trying to figure if it'll make a big difference and how much time it'll cut off the e.t. 
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
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From: Troy, AL
Re: dyno differences between 92 octane vs 114? If you're not getting detonation or pre-ignition with 92 octane then you won't see more power just by going to a higher octane (all else being equal.) Now if we up the nitrous to go with our extra octane, well that's a different story. 
Teching In
Joined: Nov 2002
Posts: 37
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From: Baltimore, MD
Re: dyno differences between 92 octane vs 114? Exactly.
Higher octane fuel has a lower BTU count (basically, the amount of engery released when burned). So, with nothing else changed, use of higher octane fuel won't produce more power by itself - you may actually produce LESS power.
What higher octane fuel allows you to do is increase whatever you are playing with. You can increase your timing, increase your nitrous, increase your boost level, whatever - all because the higher octane rating means it is harder to start the burn (less prone to detonation) not more volatile as many people assume.
Actually, if you ran 89 octane fuel and optimized for that, then added 120 airplane fuel and changed nothing else, you'd actually have a power loss you'd notice.
Higher octane fuel has a lower BTU count (basically, the amount of engery released when burned). So, with nothing else changed, use of higher octane fuel won't produce more power by itself - you may actually produce LESS power.
What higher octane fuel allows you to do is increase whatever you are playing with. You can increase your timing, increase your nitrous, increase your boost level, whatever - all because the higher octane rating means it is harder to start the burn (less prone to detonation) not more volatile as many people assume.
Actually, if you ran 89 octane fuel and optimized for that, then added 120 airplane fuel and changed nothing else, you'd actually have a power loss you'd notice.
Re: dyno differences between 92 octane vs 114? damn..., great answer, thanks, maybe you can help with this one? https://ls1tech.com/threads/showflat...31&fpart=1
