GAS TREATMENT

[eitech]

ARE ALL THOSE GAS TREATMENTS WE USE BEFORE EACH FILL UP THE SAME OR ARE THERE RECOMMENDED ONES. IF SO, WHAT ARE THE BEST TO USE? (FUEL INJECTED CARS)

[future shop llc]

Lead replacement like MMT in your gas treatment is bad for the O2 sensor... avoid

MMT

[eitech]

ok..so what to use?

[flatline]

Redline works well. Approximately $35 a bottle (e.g. Car Boutique, St James), which is marked off for about 5 fill-ups. Group buy coming up within a month or so, so stay tuned

[future shop llc]

Common Octane boosters (no Lead, Iron or Manganese)
• Ethanol
• Methanol
• Isopropyl alcohol
• Toluene
• Nitromethane


Read this thread

http://www.scoobytnt.com/forum

JDM vehicles are tuned to run on 98 reformulated. The Subaru supplemental manual states that warranties will not be affected by fuels with up to and not to exceed 10% ethanol or 3% Methanol for MY99+ this is now also true for all other major autos.

OK. a little brain work here.... A premium motor fuel will often be formulated to have both higher octane as well as more energy. ethanol blend fuels have a higher octane rating but lower energy. Ethanol is 35% Oxygen buy weight hence the term when used in blended fuels 98, 100, 103 and even 104 Oxygenated fuel unleaded will be on the label.

The EPA has set a max of 2.7% oxygen content for refinery blends Internationally. oxygenates such as Methanol (highly toxic; causes blindness) and preferably Ethanol when blended to our fuels here in TnT to get a 3.5% Oxygen content is the equivalent to 17% more AIR charge.

To learn more about Octane, Octane Rating and the difference in Fuel Oxygenates see Wikipepia also, Search; Common ethanol fuel mixtures

and yes my JDM fozz is ah alcoholik... I use 12oz (a chubby) in a tank during the week and 32oz (a Massive) to a tank on weekends.
if a bad a whole gal... man she fly...

This will raise the Octane and oxygen not to mention clean all the shiit out the fuel system.

I fuel blending NO LEAD... non of that C12 and C16 junk that will choke your cat! or pollute the O2 sensor.

So what's in your tank??? I not payin' $120 for 16oz of 107octane with MMT when buy a gallon (128oz) for $65 to $100 depending on what octane rating I am aimin' at

Then read this

http://www.scoobytnt.com/forum

Riderz

Ethanol engines and efficiency

Current ethanol engines are mildly modified gasoline engines with a few adjustments required to operate reliably, such as the use of various seals made of "Viton" rubber, as opposed the common "Butyl"-based rubber seals, to overcome the corrosive effect the alcohol content of the ethanol fuel. Also there is a neccessary water-separator system because of atmospheric humidity contaminating vented fuel tanks. Vehicles using gasoline/ethanol engines are often referred to as "Flex-Fuel" or "Dual-Fuel" in the marketplace.

Ethanol consumption in an engine is approximately 34% higher than that of gasoline (the BTUs per gallon are 34% lower), but higher compression ratios in an ethanol-only engine allow for increased power output. In general, ethanol-powered engines were tuned to give similar power and torque output than gasoline-powered ones. For example, a 2001 Fiat Mille, 1 liter gasoline type C engine had 57 HP/8,2 mkgf outputs (and 9,5:1 compression ratio), while the 1 liter hydrated ethanol engine had 61HP/8,1 mkgf (and 11,4:1 compression ratio) tuning. [20]. However, in some older engines, differences of up to 10 HP were not uncommon. This was the case of the 1988 1.6/S Chevrolet Chevette engines: the ethanol-powered engine had a 82/12,8/12:1 configuration, the gas engine had a much lower, 73/12,6/8,5:1 configuration. [21] The same happened with Volkswagen Passat TS 1,6 liters (1982, ethanol) and Passat LS 1,6 liters (1983, gasoline), which had 98(raw)/13,3(raw)/10,8:1 versus 88(raw)/13,3(raw)/8,3:1 respectively. [22]

Since ethanol-powered engines were phased out in favor of flexible fuel vehicles, the lower compression ratio requires tunings that give the same output when using either gasoline or hydrated ethanol. For example, a 2006/2007 Volkswagen Polo 1.6 Total Flex tops 101 HP when running on gas, or 103 HP with ethanol.[23]

Higher compression rates would allow for dramatically increased power output (this is the arrangement now used in "Indy" racing cars). For maximum use of ethanol's benefits, a compression ratio of nearly 15:1 should be used -- which would render that engine unsuitable for gasoline usage. When ethanol fuel availability increases to the point where high-compression ethanol-only vehicles are practical, the fuel efficiency of such engines should be the same or greater than current gasoline engines.

When it is desireable to have a dual-fuel vehicle that can run on either gasoline or Ethanol, and the power output when using Ethanol needs to be equal or greater than when running on gasoline, it is possible to increase the effective compression ratio on-demand with a turbocharger that incorporates an electronically-controlled wastegate. In this scenario a modest compression ratio with a low level of boost would allow the use of gasoline. A higher level of turbo boost would increase the real compression ratio when using ethanol or a mixture of ethanol and gas, with the level of boost being based on the readout from fuel octane sensors

[Alpha_2nr]

OK. a little brain work here.... A premium motor fuel will often be formulated to have both higher octane as well as more energy

This is incorrect.

I assume that the "energy" you speak of the "heat of combustion" or energy evloved on combustion. And for many markets, the energy evolved between different grades is about the same. This is especially pertinent for local gasolene. However, the components used in a "higher octane" gasolene are more RESISTANT to combustion, and so, avoid pe-detonation, or knock.

However, the result of having "more power" when running a premium fuel, is because with a higher RON fuel, a given engine can run more advanced ignition timing (if possible...depends on the type of engine etc), NOT necessarily because the fuel has a higher energy liberation upon combustion.

[Alpha_2nr]

Ethanol when blended to our fuels here in TnT to get a 3.5% Oxygen content is the equivalent to 17% more AIR charge.

This is also subject to debate.

The oxygen which you've mentioned is combined with Ethanol...formula C2H5OH for you chem folk. Now, this compound does nto break down on heating prior to combustion. Hence the effective oxgyen used for the reaction is the same as that when not running ethanol in your fuel system. Power comes from increased RON, and energy liberation.

In contrast to this, Nitrous (N2O) works by actually "generating" more O2 in the combustion chamber PRIOR to combustion (unlike ethanol). N2O is unstable at higher pressure/temperatures, and breaks down to liberate oxygen, and other NOx gases. The liberated Oxygen, in effect, increases the air charge (and as a function of that, combustion temperature)...so creating more power.

[future shop llc]

sorry for some of the layman terms... as U referred to energy... I am referring to BTU energy...

Example: Pure ethanol has a much higher octane rating (116 AKI, 129 RON) http://en.wikipedia.org/wiki/Ethanol_fuel than ordinary gasoline (86/87 AKI, 91/92 RON), allowing higher compression ratio and different spark timing for improved performance.

In the case of alcohol fuels, like Methanol and Ethanol, since they are partially oxidized fuels they need to be run at much richer mixtures than gasoline. As a consequence the total amount of fuel burned per cycle counter balances the lower energy per unit volume, and the net energy released per cycle is higher. If gasoline is run at its preferred max power air fuel mixture of 12.5:1, it will release approximately 19,000 BTU (about 20 MJ) of energy, where ethanol run at its preferred max power mixture of 6.5:1 will liberate approximately 24,400 BTU (25.7 MJ), and Methanol at a 4.5:1 AFR liberates about 27,650 BTU (29.1 MJ).

But measurements are being taken with our pulp 95 gas in order to come up with a base: pulp+Tolu...pulp+Eth...pulp+tolu+eth...and...Plain old Pulp95

Test vehicles: Scoobies (FOZ, WRX, and STI), Nizmo and an EVO VII.
Under Boost: noPSI, 14psi, 17PSI, and 24PSI

Logs and tunes using Enginuity, EcuExplorer and ECUFlash. info available @ Openecu.org and Enginuity.org



Hey but I here to learn... Thanx man

[Alpha_2nr]

Cool

[Rayden6]

Is this thread alive