Which Octane gas?

[Pop]

What octane do you guys run?
These are my mods--if it makes a diff.





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[dudewizr]

I usually run 87 but about every 5th tank I pour some 94 in it. Everyday commute to work about 40 miles round trip I been gettin about 45 mpg. I don't get on it or anything shift around 4000 rpm's. Now joy ridin is somethiing different, Mr Hyde drinks a gallon about every 32 miles regardless of the octane.

 

[MC MUSTANG]

Pop,
I'm glad you posted this, because I have always run 93 or better, but if there is no difference in performance.....87 is a lot cheaper. I am wondering now as well.

 

[Cecil_Stringer]

Lower Octane... Higher Performance.
Assumption: Your bike can run on the lower octane.

 

[Cuffee]

I use 87.

 

[BA BUSA]

87 anything else is a waste of money, if you go to a turbo or nitrous then you'll need something more.

 

[MET]

87 ijn your area should be fine, unless you have oxygenated gas then go to 89.



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[GSXRFANN]

What about purple racing fuel? Willl it hurt the engine??

 

[BA BUSA]

What about purple racing fuel? Willl it hurt the engine??

Its a waste of money. You will actually make less HP with race gas in a stock motor.

 

[IL_BusaBoy]

87 here also.

 

[ike]

93 when ever I can and if I find a Sunoco that still sells 94 I'll put that in her.

 

[Sako]

Does altitude have any affect?

 

[Turbo-Torch]

93 when ever I can and if I find a Sunoco that still sells 94 I'll put that in her.

You runnin' boost?

 

[Furball]

87...its is recommended..and from what I've read is best with a stock motor...even with exhaust and pc3 87 is best unless you get into advancing the ignition...or adding turbo or nitrous...

 

[DAB]

87

 

[dbusa101]

How about a big bore ? Ive never run less than 93 even when it was stock.

 

[BA BUSA]

How about a big bore ? Ive never run less than 93 even when it was stock.

Whats your compression ratio with the big bore

 

[shenoyp]

87 is the recomended octane for busas 99 - 05.

I use 91 octane

 

[nitrousjunkie]

I run VP C-16 almost always, its about 114-116 octane, bike runs good and clean! But you can run 87 as this is what suzuki intended.



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[jnor]

Race gas or anything other than 87 octane gas is not only a wate, it hurts performance on a stock or mildly modified busa.. Race gas burns much slower that pump gas, taking it farther nitromethane will hardy burn with a match. Without high compression, and a lot of timing there is no need to run any higher octane.