quick4dr Posted November 10, 2009 Share Posted November 10, 2009 91 or 93 octane for stock tune? Link to comment Share on other sites More sharing options...
mwiener2 Posted November 10, 2009 Share Posted November 10, 2009 depends on what you consider "stock tune" My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
quick4dr Posted November 11, 2009 Author Share Posted November 11, 2009 Stock as in stock factory settings for everything. Soon to run Perrin intake, and perrin cans. Will eventually E-tune a stage 1 map. But as of now should I run 91 or 93 octane? Link to comment Share on other sites More sharing options...
m sprank Posted November 11, 2009 Share Posted November 11, 2009 93 is better. But 91 will usually be ok. Manual on STi's recommends 93. Why not just go with the 93 and have the peace of mind. Link to comment Share on other sites More sharing options...
mwiener2 Posted November 11, 2009 Share Posted November 11, 2009 you should put in whatever premium is in your area. not the highest octane you can find, just regular premium for your area. My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
m sprank Posted November 11, 2009 Share Posted November 11, 2009 you should put in whatever premium is in your area. not the highest octane you can find, just regular premium for your area. Unless you live in CA, then you might as well piss in your tank cause the gas is no better. Fixed for you Mike. Wasn't saying to buy 93 cause its more expensive. In CA the "good" gas is crap and the stuff that comes in from Mexico is either half water or half dirt. When I was in NY, Sunoco 93 was like a godsend. 91 is fine as long as the refinery is clean, lol. Link to comment Share on other sites More sharing options...
mwiener2 Posted November 11, 2009 Share Posted November 11, 2009 I used Sunocco 94 in PA My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
m sprank Posted November 11, 2009 Share Posted November 11, 2009 ^ I hear you My last race gas sponsor was Sunoco, but none on the west coast. I see the OP is in "Rockland". If this is Rockland County NY, I recommend the Sunoco 93. When my LGT was in the tri-state area it ate ONLY Sunoco 93 for the entire year it was there. YUMMY! Link to comment Share on other sites More sharing options...
rtbrjason Posted November 11, 2009 Share Posted November 11, 2009 We used to get Sunoco 94 in the western ny area. They had 87, 89, 93 and 94. In the last couple years they switched to 87, 89, 91 and 93. Not sure if Sunocos in other areas still do 94. Link to comment Share on other sites More sharing options...
quick4dr Posted November 12, 2009 Author Share Posted November 12, 2009 Rockland NY is correct. Ive been filling up in Montvale NJ 2.79/gal for 93oct. Link to comment Share on other sites More sharing options...
m sprank Posted November 12, 2009 Share Posted November 12, 2009 You dick, I am sooooooo jealous. Cost avg $3.30 for 91 and it is crap at that. Plus I have to fill it myself, where in Jersey you don't. Self serve is friggin illegal in Jersey. Damn I miss the east coast gas. Just left Pearl River in July. Home town. Rockland County Rules! Link to comment Share on other sites More sharing options...
fishbone Posted November 12, 2009 Share Posted November 12, 2009 93 won't have any real benefits unless your stock map is knocking enough to impede performance. The only way to get a concrete answer is to datalog on a tank of 91 and then on a tank of 93 and see how the stock tune is doing. Link to comment Share on other sites More sharing options...
F-WDC Spec B Posted November 12, 2009 Share Posted November 12, 2009 Sunoco Tusday Sale $2.71 for 93 by my job and in Newark on 21 $2.73. Thats when i fill up! other wise $2.70 for 91. Im on Cobb OTS for 91. Link to comment Share on other sites More sharing options...
m sprank Posted November 12, 2009 Share Posted November 12, 2009 ^ jr, FU. Nuff said. Link to comment Share on other sites More sharing options...
fishbone Posted November 12, 2009 Share Posted November 12, 2009 +1. Nebraska can't even get decent 91 gas, and you f-ers are talking about 93 and 94 Sunoco. Thanks for not twisting the knife in the wound. Link to comment Share on other sites More sharing options...
F-WDC Spec B Posted November 12, 2009 Share Posted November 12, 2009 oct ratings arent the same in every state either. like 91 in jersey is prolly 92 in TX since jersey is at a higher elevation. This better explains it... In the Rocky Mountain (high altitude) states, 85 AKI is the minimum octane, and 91 AKI is the maximum octane available in fuel. The reason for this is that in higher-altitude areas, a typical naturally-aspirated engine draws in less air mass per cycle due to the reduced density of the atmosphere. This directly translates to less fuel and reduced absolute compression in the cylinder, therefore deterring knock. It is safe to fill up a carbureted car that normally takes 87 AKI fuel at sea level with 85 AKI fuel in the mountains, but at sea level the fuel may cause damage to the engine. A disadvantage to this strategy is that most turbocharged vehicles are unable to produce full power, even when using the "premium" 91 AKI fuel. In some east coast states, up to 94 AKI is available [1]. In parts of the Midwest (primarily Minnesota, Iowa, Illinois and Missouri) ethanol based E-85 fuel with 105 AKI is available [2]. Often, filling stations near US racing tracks will offer higher octane levels such as 100 AKI. California fuel stations will offer 87, 89, and 91 AKI octane fuels, and at some stations, 100 AKI or higher octane, sold as racing fuel. Until summer 2001 before the phase-out of methyl tert-butyl ether aka MTBE as an octane enhancer additive, 92 AKI was offered in lieu of 91. Generally, octane ratings are higher in Europe than they are in North America and most other parts of the world. This is especially true when comparing the lowest available octane level in each country. In many parts of Europe, 95 RON (90-91 AKI) is the minimum available standard, with 97/98 RON being higher specification (being called Super Unleaded). http://en.wikipedia.org/wiki/Octane_rating#Examples_of_octane_ratings Link to comment Share on other sites More sharing options...
m sprank Posted November 12, 2009 Share Posted November 12, 2009 Previous comment stands. Link to comment Share on other sites More sharing options...
F-WDC Spec B Posted November 12, 2009 Share Posted November 12, 2009 Link to comment Share on other sites More sharing options...
m sprank Posted November 12, 2009 Share Posted November 12, 2009 Just breaking chops jr. Nice to see your still laughing. Link to comment Share on other sites More sharing options...
mwiener2 Posted November 13, 2009 Share Posted November 13, 2009 oct ratings arent the same in every state either. like 91 in jersey is prolly 92 in TX since jersey is at a higher elevation. 91= 91 and 92=92 in the USA they simply don't offer the higher rated fuels in some areas. you kids and your $2+/gal maxing out at 94oct gasoline. E85 is $1.89 here. (105oct) My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
m sprank Posted November 13, 2009 Share Posted November 13, 2009 ^ Rub it in. Here's some meat tenderizer, make sure to use it next time. There is 1 count em 1 e85 station within 200 miles of my house (and it isn't $1.89). I would have better luck getting the guys at the airport to sell me AV gas. Link to comment Share on other sites More sharing options...
fishbone Posted November 13, 2009 Share Posted November 13, 2009 There are 7 E85 gas stations in Lincoln alone. Nebraska is full of'em Link to comment Share on other sites More sharing options...
F-WDC Spec B Posted November 13, 2009 Share Posted November 13, 2009 I have not seen one E85 station around here but i do see alot of GM's Flexfuel vehicals. and i ask WHY! for NJ/NYC? Link to comment Share on other sites More sharing options...
m sprank Posted November 13, 2009 Share Posted November 13, 2009 There are 7 E85 gas stations in Lincoln alone. Nebraska is full of'em Well duh.... Isn't Nebraska where all the CORN comes from anyway? :lol: Link to comment Share on other sites More sharing options...
fishbone Posted November 13, 2009 Share Posted November 13, 2009 Corn. And boredom. Nebraska definitely has a supply of boredom enough for the entire world. Link to comment Share on other sites More sharing options...
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