Just curious if anyone in the evo world has tried out the newer VP fuel called Q16? It looks promising and is a tad cheaper than C16 fuel, but it takes more to burn so the price evens out.

People are claiming ~100 hp gains by going from C16 to Q16.

Similar to switching to E85 from regular pump, the idea is that you need to run more of it because it has a lower potential energy value but the benefit is the motor pumps out more exhaust which helps spool the turbo. The tech press release from them states that Q16 has superior burning speed and makes more pressure in the combustion chamber (as compared to 116 octane fuels)... but is more resistant to detonation because of the extra fuel in the cylinder. So with even more rapid expansion due to heat and faster flame front travel, this to me sounds like EGTs would be higher with this stuff compared to C16. On the other hand, you need to run more of the Q16 (5-6% according to them) and running a little on the rich side is a general preventive measure used to keep combustion chamber temperatures below XYZ threshold (dependent on piston design, CC design, etc.) Next question: Is the general rule that the more oxygenated a fuel is -> the faster it burns -> the more of it you need to keep the temperature in the combustion chamber below the melting threshold?

 

I could see a problem with the whole fact that it burns faster so you need more. With E85 on a stock turbo people are already running 880's. High horsepower cars are running anywhere from 1000-1600cc injectors and now people are switching to running twin rails with big injectors. This could be a problem for this fuel being used in 800-1000hp evos where c16 is used the most. Imagine needing to use 8 1600cc injectors or something outragious like this just to feed enough fuel

IDK this is just my thought any one else?

 

It takes a little more fuel than C16, but nothing drastic, nothing like an alcohol based fuel. Someone is making almost 950whp with 4 160lb injectors on it to give you an idea.

From the sounds of it, I'd almost guess they're taking C16 and adding a little nitromethane to the mix, possibly even hyrdazine. A little of both will add burn speed, and help reduce charge temps, and the tetra-ethyl lead does the role of anti-knock. The stoimetric mixture for nitro is 1.7:1, to give an idea of how little is needed to make it a heavily oxygenated fuel...

The cooler IAT's and faster burn time is a good exchange for the volume of fuel used. And you are getting a fuel that will reduce the level of knock in a motor.. Seems like a good trade off to me.

 

I am really surprised no one here is trying this fuel out.

 

I talked to VP about this and in a nutshell people are seeing 4-5% more power. Will have to see if it catches on.

 

Seems like it will be a big hit in the import crowd. Maybe David B. should do some testing with this fuel on his white rs?

 

that would be cool

 

TurboTrix has used it numerous times on varying arrays of setups. Maybe they can give some input on it?

 

i will be getting tuned on this... the key to this fuel is you cant throw it in a go..you need to get retuned on it because you actually have to add like 3-5% fuel over your whole fuel map

 

we are using q16 soon. i have a drum here just car is down and havent had a chance to retune..

 

Q16 is oxygenated and requires a bit more fuel than C16.

Supposed to net like 5% more power than C16.

Mitch

 

best part is its the same price as c16..

 

It really isn't a new fuel. We have used it a bunch of times in some of the higher HP cars we have done. Does net a bit more then C16 but how much I could not say exactly.

Mitch

 

Your right it was added to VP site about 9 months ago.

 

considering how long c16 has been out i consider it a new fuel..