No more VP MR9...WHAT NOW?!

From our dyno and track testing, we have found the MR11 and MR9 are almost identical fuels from a performance standpoint. We have also seen no need for map changes in between these three fuels for 99% of our customers. The only real exception to this would be AMA Dragbike super sport racing to squeeze the last .001 out of the bike during national competition. The average rider and racer will not notice the difference.  

VP Racing Fuels Claims:
MR11^TM
Recommended for 4-stroke applications where octane requirements are fairly low, e.g. Supersport, Superbike, Formula Extreme, Supermoto and MX. Delivers up to 6% more power than pump gas and any basic non-oxygenated racing fuel. AMA-legal except for Supercross and Outdoor Nationals.

• Color: Yellow
• Oxygenated: Yes
• Motor Octane: 90
• Specific Gravity: 0.749 at 60° F

MR9
Designed for 4-stroke applications that can tolerate lower octane values. Makes up to 8% more power than pump gas and up to 2% more power than MRX01. Used by every champion in AMA Superbike Pro classes in 2004 and 2005, as well as the Supermoto, Supermoto Lite, and Supermoto Unlimited championships in 2005. Although currently not legal in AMA Pro Racing, MR9 passes fuel rules for AMA amateur racing as well as club-level racing, CCS, WERA, and AFM.

• Color: Clear
• Oxygenated: Yes
• Motor Octane: 87
• Specific Gravity: 0.718 at 60° F

MRX01
Recommended for 2- and 4-stroke applications. Delivers up to 6% more power than pump gas and any basic non-oxygenated racing fuel. Excellent for high compression road race applications. Can be mixed with MR9 to raise octane level for specific applications. Clean burning — leaves intake and exhaust valves virtually free of deposits for maximum airflow and performance from start to finish. AMA-legal except for Supercross and Outdoor Nationals.

• Color: Pink
• Oxygenated: Yes
• Motor Octane: 98
• Specific Gravity: 0.717 at 60° F

We have tested both fuels against MRX01, which both net about a 2% increase over MRX01.  Our test bike, 2008 stock-motored Hayabusa; we found (on a very hot day) MR11 made about 200 HP.  When MRX01 was dyno-ed the same day (within 1 hour), we found it made 196HP.  Both fuels (MR11 and MR9) are highly oxygenated, which causes them to have very fast burn rates, so nitrous use is HIGHLY discouraged. 

You will notice the MR11 has an octane rating of 90 while the octane rating of the MR9 is only 87. This has proven beneficial to the performance of the latest models (2007-2008 Hayabusa’s and GSX-R1000's) which come with increased compression ratios from the factory.

We are currently testing several varieties of the new AMA Dragbike-approved XXX Racing fuel for 2009. Initial results have been very impressive, especially for an environmentally friendly/“green” product. We will continue our testing, and post results soon.

Brock

Special thanks to Jason Gillum of Brock's Performance for the test results and information provided, using our in-house Dynojet model 250I dynamometer.