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02-27-2014, 04:09 PM | #1 |
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Anyone know where to get higher than 91 octane?
Im located in Bellevue, 10-15 minutes away from Seattle. I just wanted to know if anyone knows of a place that has like 100+ octane near around here. I feel like there should be some around the area. There are a lot of high end cars in Bellevue
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02-27-2014, 04:11 PM | #2 |
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auburn by drift office has 101.
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02-27-2014, 04:53 PM | #4 |
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Look for E0. Ethanol is shit.
92 octane E0 is probably more like 95. You can find stations in the area on pure-gas.org Well worth it, no more crickets either |
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02-27-2014, 04:58 PM | #5 |
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Race gas?
101 octane unleaded at Shell on Bothell Everett Hwy at Thrasher's Corner (Mill Creek/Bothell) is $11.59/gal available 8am-7pm |
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02-27-2014, 05:01 PM | #6 |
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Also forgot. Bob has 116 CRT shell racing fuel. Ask him for details.
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02-27-2014, 05:24 PM | #7 |
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Out of curiosity, what mods have you done to your car to necessitate a higher octane rating than 91?
Putting race gas in a stock car pretty much just gives you more expensive exhaust fumes. Scott
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02-27-2014, 05:48 PM | #8 |
Just the tip
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Costco does 92oct and is the cheapest gas a good quality. It does have 10% ethanol just like 95% of all gas stations though.
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02-27-2014, 06:34 PM | #9 |
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02-27-2014, 07:06 PM | #10 |
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Wouldn't it have a greater effect in an engine with higher compression ratios like ours, though?
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02-27-2014, 07:49 PM | #11 | |
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Quote:
Save your money.
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02-27-2014, 07:55 PM | #12 | |
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Quote:
Not as much as you would think. I'm sure that some of the fine gentlemen representing tuner shops around here can give a much more detailed explanation especially for the FA20 but here is the Sunday School version. The only real benefit to running a higher octane rating in fuel is for detonation prevention (which most people know). The more you compress an air/fuel mixture the higher the temperature of the combustion charge which is why most high-performance engines need higher octane fuel. That said, you can only take advantage of the higher octane ratings by increasing ignition timing, increasing compression, or forced induction beyond a certain point. A stock FA20 (even with bolt on's) will only adjust its ignition timing slightly forward or backward depending on feedback from multiple sensors and only up to a point. More dramatic changes to ignition timing, cam timing, fuel injector pulse width, etc can only be achieved by having a proper tune. Simply changing fuel alone won't cut it. Sure, the ECU may give you a little bit more timing with 93 vs 91, but a stock tune will not adjust itself to run on 95 or higher. Also, if there are any hp gains to be had with 91 vs 93 octane fuel, they would be well within the error variance of most dynos. 100 octane even less so. Hope that helps. Scott
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02-27-2014, 07:56 PM | #13 | ||
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Unleaded 101, Leaded 114 and 119?
Quote:
Quote:
But it is true, past 94 octane, you won't realize any performance gains till you get a tune... And even then, limited in NA formats! Cheers! Bob @ Drift-Office, LLC |
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02-27-2014, 08:05 PM | #14 | |
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Quote:
Thanks for chiming in Bob! Perfectly fair question! I just moved back to WA State back in July from Alabama and I forget that WA only seems to have 92 at the pumps. In Huntsville, 93 was the high and 91 was easy to find as well in the surrounding states. It was also easy to find ethanol-free gas stations in Alabama! Scott
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