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Evo General Discuss any generalized technical Evo related topics that may not fit into the other forums. Please do not post tech and rumor threads here.

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Old Aug 22, 2008, 02:02 PM   #31
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i just filled up with BP 93. $3.65. One of the best gas staions imo plus the cheapest.
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Old Aug 22, 2008, 04:56 PM   #32
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how much boost can you run with 93 octane with a good tune as opposed to 91 octane?
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Old Aug 22, 2008, 05:16 PM   #33
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Damn it, here in Cali I have to pay $4.20 - $4.30 for 91 oct.
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Old Aug 22, 2008, 06:44 PM   #34
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HERE are my 2cents -

With the complexity of the engine and the otherwise high boost of the Evo, there should be enough of a diff between 91, and 93, that it should be noticeable; so I dont think its "just in your head".

Also, as far as which brand to use, many years ago, i used to work for Exxon as a motor-oils researcher. My supervisor (a Phd, and somethin like 30 years in the field) always told me that most gas stations (at least in NY/NJ) buy their gas from the same wholesaler or supplier (as very few have their own oil fields and refineries), so he always stressed that i should just fill up at the cheapest possible ACME gas station... but most of us, including me, are label wh0res, thinking that the brand name is always better.... so Mobil, Shell, Mercedes and Sony, here i come.


P.S. In NYC, 93oct is $4.15 now, but was $4.55 two weeks ago (and 91oct is usually only 4-5 cents less).
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Old Aug 22, 2008, 06:49 PM   #35
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3.99 in ky...and its came down from 4.29
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Old Aug 23, 2008, 12:10 AM   #36
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Quote:
Originally Posted by raevo9 View Post
how much boost can you run with 93 octane with a good tune as opposed to 91 octane?



usdm Evos are factory tuned for 93 octane..so that is your baseline.
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Old Aug 23, 2008, 07:21 AM   #37
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^^^^^^^
so 19-20psi should be the max on 93?
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Old Aug 23, 2008, 11:27 AM   #38
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25 psi should probably be max psi on 93 octane. 21 psi on 91 oct
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Old Aug 23, 2008, 12:13 PM   #39
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3.66 a gallon for 93 here, and it seems to be on it's way down. i've seen that price at walmart so far, but shell, chevron, and others aren't too far behind. all we have here is 93...i didn't know there was a lower grade of premium until i started posting here lol i'd never heard of 91. every once in a while you can find one gas station somewhere with 92, but that's rare.
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Old Aug 23, 2008, 12:14 PM   #40
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Quote:
Originally Posted by novem View Post
usdm Evos are factory tuned for 93 octane..so that is your baseline.
the US EVO X is tuned for 91
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Old Aug 23, 2008, 03:16 PM   #41
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Quote:
Originally Posted by ODUB View Post
the US EVO X is tuned for 91
this is not the evo X section...
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Old Aug 23, 2008, 03:42 PM   #42
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4.09 for 91 oct in SLC UT. A few 100 oct. pumps but there 6.75-7 bucks
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Old Aug 24, 2008, 03:53 PM   #43
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Originally Posted by tdizzle06 View Post
I get it at a station right near my house actually, VP Gas Station in Los Altos. Heres the address if youre close:

VP Gas Station
Los Altos Rancho Shopping center
660 Fremont Ave
Los Altos, CA 94024

The location of this station may be one of the reasons its so expensive though, everything in Los Altos is. Last time I was there which was about a month ago 93 was 5.90 something and 100 was 7.90 something


To the guy asking about this station, I just went back yesterday and found that its under new management! SUCKS! no more 93 or 100, just 87, 89, 91 like always... crap that was the spot too, right by my house now I have to drive to redwood city to fill up.
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Old Aug 24, 2008, 04:17 PM   #44
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Old Aug 25, 2008, 09:04 PM   #45
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I saw a station off of 46 called jazz gas reg was 3.37 93 was 3.57 that was 2 days ago. But I wouldn't touch that gas. Shell only
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Old Aug 25, 2008, 09:04 PM
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