No one runs Q16 ? We've seen big power gains in some of our other engines by switching to this fuel over C16. Figured I'd stir the pot some more.

 

Q16 works well how bout VP import that **** is the bomb! Expensive as hell but if you want every last bit of HP I see this to be the clear winner! for someone who drives more frequently I suggest 109 unleaded and might want to keep cats like I. For the Drag track nut VP import will always win!


S

 

come on Wes most of these guys just heard of c16 you just pitched a curveball .......The big difference with c16 to ms109 is the 109 is oxygenated fuel like the Q16, great for power but its not good to put in a car when the fuel system is on the verge of being maxed out it will lean it out .5-1.0 AFR.

Chris Green

 

Chris,
What is the difference between 104 octane and MS 109? Someone said MS109=105 octane, is this correct?

 

I looked into Q16 as well, especially after VP themselves said it's better than their own VP import...but the price per gallon was ridiculous. C16 works well enough for my needs.

 

The difference between 104 and MS109 is 1 octane point.

Simply look on VP's website and you'll have your answer (R+M/2 is the octane number you are looking for):


MOTORSPORT 109
Produces more power than any other unleaded fuel. Recommended for higher boost applications with CRs up to 11:1 or naturally aspirated engines up to 13:1. Excellent in crate engine applications. Fueled 2-time World Jet Ski Champion, David Sellés. • Color: Clear
• Motor Octane: 101
• R+M/2: 105
• Research Octane: 109
• Oxygenated: Yes
• Specific Gravity: .722 at 60° F


When comparing Motor Octane #'s between C16 and MS109, we're looking at 117 octane vs 101. C16's R+M/2 would be even higher than 117 if they listed it, which is what you'd compare to MS109's 105.


C16
Used in turbocharged engines, blown engines and nitrous applications with CRs up to 17:1. Recommended by the top nitrous oxide companies. Spec Fuel for NHRA Comp Eliminator. Color: Blue
• Motor Octane: 117
• Specific gravity: .735 at 60° F

 

Be careful switching between C16 and VP import unless the car was tuned for both .VP import is oxygenated and wil throw off the afr's

 

This is a very commonly known thing with most leaded race gas.

Call tial and or most wastegate manufacture for that matter and ask why they make 2 different 38mm wastegates. One for leaded gas (c16 or similar)and one for pump gas.

http://www.tialsport.com/prod_wg_38.htm

 

Like most cars I only suggest tweaking for these settings. If this is going in a OTS 100 octane program. I would stick to whats cheaper for these tunes don t make more power richer they make them leaner.


S

 

Many of them have motors, but that may be something to think about in the future...

As with any gas you need to get a proper tune-up for it, the best fuel is one that your tuner recommends,as long as you trust you tuner that is.

 

Very informative guys, thank you.

 

Finally received information from Todd K and yes he recommends that anyone who runs over 1.3 bars on a set up like mine that I use C16. My setup is a 3.8, GT35 with GT3 intake and exhaust cams :-)

 

Now why would go and doubt me, Rob? Have I ever steered you wrong before?

 

Todd likes Sunoco GT Plus with a stock fuel system, it is a denser fuel & 104 oct.I thought ms 109 was 103 oct?

 

Scott
Never in doubt but always nice to hear it from the Genius!
R