I have to agree with KingRaptor on this one. Higher octane means it resists pre-detonation caused by higher cylinder pressures, it doesn't mean that it burns cleaner or cooler.
If you say that you can feel the difference even on a stock compression engine, maybe it's because high octane actually burns slower giving the piston a slightly longer push on the power stroke instead of a quick 'pop' that you would get from a quick burning lower octane fuel.

 

Thats a pretty good point, I'm going to look more into it and see what other thoughts are.
It is cleaner and cooler, maybe due to it's complete burn off.
Who knows I'll look into it.

 

Your dealers right your raptor was built to run low octane pump gas. Only with major motor mods will you need hi octane fuel

 

about the fuel. i have a fst 11:5.1 piston and their cam in my raptor. i tried vp green one time. i believe it's around 108 octane. it killed my 300ft. times by a half second. i thought may be i was spinning more since i was on dirt. i walked the track and noticed the perfect tread prints in the dirt where it was normally slinging a good roost. still hoping, i tried it on pavement and no difference. i asked my mechanic and he said the fuel burns slower and he was not surprised.

 

RaptorRidingOut When u gonna post them dyno results?
I ran my raptor on a dyno and would like to compare with u.
[img]i/expressions/face-icon-small-smile.gif[/img]

 

see the link at the bottom....dyno results are the last two pics