z3r0hunter

I am curious if anyone out there has mixed in any type of fuels with premuim gasoline. If so then I would like to know if it made your car a little stronger & what type of fuel ratio you used.
THANX

pushing4wardbac

iTrader: (4)

Jet Fuel is lower octane than premium its similar to putting kerosene in your car. I don't think its a bright idea. I am sure aviation gas is pretty high in octane though.

Korki Buchek

iTrader: (4)

Aviation gas is very (very!) high octane. It can cause problems with your injectors and various other components. On carbureted engines it is doable if you continually clean the valves and the carb. In injected engines, I hear it is a no-no. Just use racing gas, like everyone else.

Mike Wazowski

iTrader: (113)

isnt jet fuel Diesel???

HDPDZO6

It is similar, but not the same.

cessna

AvGas aka: 100LL (Run in most piston engined AC) will foul up your O2 sensors real quick. Remember the LL stands for "low-lead"

Jet fuel aka: JetA is basicly diesel. Not exactly the same, its just more refined with a higher flash point.

Neither will give you any gains other than seriously screwing up your car.

JETPILOT

iTrader: (51)

Yeah..... You go fill up with some kerosene and let us know what kind of preformance you get out of it.

JET

davidv

iTrader: (2)

If you use jet fuel make sure you are dressed properly.

Z04

iTrader: (15)

and those octane additives do nothing at all for fuel injected cars (since our fuel amount is regulated by the ecu as to how much fuel goes into the cylinder), those are mostly made for carburated engines. so that means that if you buy cheap gas (non-premium) and put in a octane booster, you basically just bought cheap gas since that octane booster can not make up the difference to the proper level that true premium is refined to.

Ziggyrama

iTrader: (15)

The octane rating of fuel is not really related to the volume the ECU will spray during combustion. I think you may have gotten something mixed up there or I misunderstood what you wrote. Octane really describes a specific chemical property of fuel which in turn gives you specific detonation resistance. The higher the octane, the more resistance to detonation during combustion.

The octane boosters you buy at stores like Auto Zone and such are pretty much useless. They raise your octane by a single point. It even says so on the label, if you read it So, if you have 93 oct gas and you add that crap, you'll end up with 93.1. Whoo hoo, whooptie doo!!! The benefits are not really worth the money.

If you want a real octane boost, you have several practical choices other than filling up with race gas. You can go to a hardware or paint store and pick up a gallon of Toluene. The effective octane rating of toluene is 115oct and is safe for our cars. If you add 1 gallon of it to 9 gallons of 93oct, you end up with roughly 95oct. Much better octane booster than the stuff from auto store. Another one is Xylene which is roughly the same octane, maybe slightly lower, like 113. You can always just dump denaturated alcohol like methanol or ethanol although large amounts of that stuff can have adverse effects on your fuel system. Methanol is particularly rough on rubber and some plastics. Also, alcohol is less energy efficient than Toluene or Xylene so you'll have better results with the Toluene or Xylene.

All this octane talk is only worth the effort if you can actually take advantage of it. If the ECU is already at the top end of your timing advance profile and you're not experiencing detonation, adding more octane to fuel will not yield more power. In fact, you can actually loose power with more octane than what your tune is set up for. The general rule of thumb is that for maximum power output, you want to run the lowest octane that you can get away with given your setup. Obviously, running with higher octane which allows you to run more timing, get the AFR closer to optimal torque range while increasing air flow will produce more power. So, do your homework to make sure more octane will really help you before you start trying to add more.

Mike Wazowski

iTrader: (113)

I just fill up with 100 octane and dont have to worry about boosters LOL

Wired 24/7

iTrader: (2)

The only octane booster you should bother with is HIGHER OCTANE GASOLINE, 100+

And if you're on stock ECU no, you won't make any extra power.

rsmokinjoe

You can always run water/methanol.. My buddy runs aviation fuel in his single turbo supra (stock internals)... I believe its equivilant to 117 or 118 octane fuel...

ROSELL0522

http://www.elektro.com/~audi/toluene/tol2.html