Yup octane burns slower causeing a slower bike with low compression. But these fuels are lead based and provide other properties that pump fuel dosn't...solution VP's Ultimate Four. Made with stock-mild 4strokes in mind. Simply adding this fuel netted a better percentage gain than did any exhaust system. And this was a test by transworld NOT dirtwheels.

 

Maintaining proper jetting is a lot cheaper than using race gas.....

 

<B>FTZLT250r that is so true. That VP gas sounds like it would be good for that 400ex. I have not researched that because I have a 2 stroke, that is some good info. I also agree that leaded race gas has better properties than pump gas, they add all kinds of crap to that gas depending on where you live etc. </B>

 

I forgot to mention that if you do run a pure racing gas say KLOTZ 113, you will absolutely have to re-jet or you will run way too rich!! I tried it and had to do some major carb adjustments. I found that the 25% mix works better for my application. I also have alot of gauges so I see what I am gaining and what I am losing and a mixture worked best with my mods on my 2stroke. Just my .02

 

Up here, VP gas is over $7 per gallon.... Ouch!

 

Wow! The race fuel I ran last July was around $1.80. I'm sure its around 2-3dollors now though.

 

Dang gas here was about 4.00/ gallon before prices started going up, I wouldn't worry about costs at all if it were that cheap. I ordered some Klotz gas last winter and It was $32.00/ 5 gallons. After 2 , 5 gallon cans and all the handling fees and shipping costs the grand total was about $120.00

 

Race gas from the pump up he is about $3.70 per gallon. VP in the 5 gallong cans is $7 per gallon. Phillips in the can is $6 or $7 per gallon. I guess I'll stick to bring my own can....

 

Yep me too, now that I have two good metal cans to keep the gas fresh.

 

Just a lesson in how stupid Ca is. It is now illegal to sell and use the plastic jugs for fuel(you know the ones everyone uses-even the little red ones at the gas stations. Is that dumber than dog shux or what!