Nov 19, 2011 · Although octane rating may affect stoich it cant be simplified as a percentage of octane (iso-octane) as he assumes. For example Methanol has a RON of 113 octane but has a stoich of @6.5:1 and Ethanol has a RON of 116 octane and has a stoich of @9:1. Both these fuels have alot more oxygen in them hence the lower stoic values.

Feb 15, 2004 · The problem I have with that calculation is that it seems to decrease the effective octane of the original gas, which makes no sense. Furthermore, the octane properties of methanol should come from mass-flow, not the converted flow. When I try to do anything like that though, I end up with a total octane value of 110+ which makes even less sense.

Oct 27, 2011 · The problems with the race gas calculators is your going by octane numbers. E30 is estimated 93-95 octane. IMO it will suppress knock better than it's equivalent 93-95 octane std petrol fuels. Same with E85's 105 "rating". If your going to play with blends I think it would be a good idea to get an ethanol percentage meter on the return line.

Jan 31, 2010 · Octane: Unleaded 98, 100 ($8.00), 104 ($6.76+ Tax). Leaded: 106, 110, 116 (don't know costs) Methanol: (120 octane) 5 gallon pale $35 I am addicted to sweet smelling 104 Place: Kellerstrass Address: 1500 W 2550 S. Ogden Octane:100 (don't know price) Additional places that I have not been, but are supposed to have race fuel.

Oct 10, 2013 · If you had 93 octane with 10% ethanol and 93 octane without any ethanol, the car would have the exact same performance except fuel economy. i agree with everything up to that point. there is a reason many super high hp race gas blends contain oxygenates: it's because oxygen is always the dearest thing to making power in an IC engine.

Nov 20, 2011 · 12oz (soda can worth) of Torco Accelerator in a 15gallon fill of ACN91 gives perfect 93 octane. Its what I run daily in SoCal so I can stick with the 93 octane maps. Ive proven it via many, many logging sessions... its not snake oil ots octane booster from pepboys.

Apr 14, 2006 · Any car setup (as in, tuned) for 87 octane will run best on 87 octane. Headers/exhaust contribute to reduced combustion chamber temperatures and reduce knock tendencies. Cams do much the same, increasing flow through the engine and reducing cylinder temperatures, and in turn tendency for knock.

93 octane- $1.50 a gallon You need to mix it 1:1 which will give you an Octane of about 101, which is $2.25 a gallon. Here you can buy 100 octane for 6.50 to 7.00 a gallon at the pump or 112 octane leaded gas at the track for around 7.00 a gallon ( which you can only fill …

Feb 25, 2006 · Ok.. got 30 bucks worth of 100 octane right after my gas light turned on. I guess it mixed with a little less than 2 gallons of 93 octane. Here is what I came up with. I didn't get to lean fuel out anymore than my 93 octane tune (afr 11.1-11.3) because for some reason my wideband was acting crazy even though it was fine two nights ago...

Aug 13, 2015 · Next step is to get the Cobb Accessport connected, and flash one of their OTS maps. Since the car is completely stock at this time, I went with their Stage 1 93 octane tune. Right away, you can tell the knocking issues are gone! Power is much smoother, and actually caries on up top unlike the factory tune. Target boost on the Stage 1 OTS map is ...