Vp racing u4.4 fuel

[yukon yamaha]

has any one tried running vp u4.4 in their machine? Got a can here and looking to mix it 50/50 just looking to see if any one has run it in the past
Thanks guys!

 

[wot-75]

has any one tried running vp u4.4 in their machine? Got a can here and looking to mix it 50/50 just looking to see if any one has run it in the past
Thanks guys!

Basically a waste if you're not tuned for it... even more so if you mix it with regular fuel. Just my 2 cents.

I'd like to ride behind you for the smell though

 

[tapex_07]

Why do you say it's a waste?

 

[cannondale27]

Because to take advantage of it you need to make the mixture richer.

 

[cannondale27]

If I remember right C12 or even Turbo blue with advanced ignition tune put same power out.

 

[cannondale27]

Try MR9. Be prepared to drain tank and flush with gas though.

 

[tapex_07]

It's not like he'll make more power, but it will be safer. I personally will be be running race fuel in my Nytro and a mix in my Viper for cheap insurance.

 

[wot-75]

Why do you say it's a waste?

U4.4 is a direct replacement fuel.. not designed for "mixing". To best optimize any race fuel you need to get a custom map made for your motor using the race gas of your choice. Then, using for instance a PCV, get a map toggle switch so that you can switch between pump and race gas maps on the fly.
Just pouring it in or diluting with regular fuel will give you no real noticeable gains. At $16-$18 a gallon I would do it right otherwise, imo, it's a "waste".
There are real measurable gains to be had with race gas and proper tune to better harness it's inherent properties, but prior to that you're just wasting your money IMO.

 

[tapex_07]

I didn't know the U4.4 fuel was a direct replacement fuel. I was thinking more along the lines of adding for octane (due to how we all get watered down gas sometimes).

 

[yukon yamaha]

Thanks for all the info , I did build a map just for U4.4 and full tanks. I was thinking about 50/50 just to ensure better chances at a good octane number.
I guess I will have to try both and see how it works.

 

[shagman]

Be careful with leaded fuel it is hard on your o2 sensor. U4.4 has lead..