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

auburn by drift office has 101.

thanks brotha, do you know if they are leaded or not?

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

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

Also forgot. Bob has 116 CRT shell racing fuel. Ask him for details.

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

Costco does 92oct and is the cheapest gas a good quality. It does have 10% ethanol just like 95% of all gas stations though.

Gotta agree here. Please don't say just to be cool....

Wouldn't it have a greater effect in an engine with higher compression ratios like ours, though?

Not really, and not to the point you'd notice without some extensive tuning and remapping to take advantage of its extra resistance to detonate.

Save your money.

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

Unleaded 101, Leaded 114 and 119?

Shell URT 116 is now discontinued. I have a Unleaded 110 Racing Fuel. Pretty awesome stuff. So is the price per gallon. :)

My question is how are you getting 91 in WA? This is a good question though the more logical answer to using higher octane fuel in our FA20s is that you'll get better performance generally (IAMs will be happier) and it's more of security measure against knock / detonation.

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

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

I'm just trying to get some high octane fuel to make a video. Tryna see if I can backfire some flames. Lol. Sounds stupid but the video I'm making really needs it..

And I actually heard our car doesn't do any good after 93 octane without tune. So I'm hoping this gives me a bit more rich and backfire that out. I have a custom straight pipe done with test pipes and my exhaust always pops like a gunshot at around 3-4k rpm but no flames. Hopefully the higher octane does...

The 92 octane from Shell, Chevron, Costco, and other major (reputable) brands here in WA are just fine in the car, N/A or turbo/hairdryer-charged. The gas at the 7/11 or other quickie marts that offer gas as well tends to be pretty dodgy.

Cenex in some areas offers 92 non-ethanol, the cars are the happiest on that.

91 is junk, usually. That's because in most cases, it's 89 with ethanol added, and from all my testing across 4-5 states, the engine responds like it's 89, ethanol be damned.

Will the car run on 91? Yes, and if it's from a reputable brand, it's generally ok. But it is also likely its going to pull a bit of power on the top end because of the 91, turbocharged or totally stock. Simply moving up to 92 almost always brings it back up to 100%.

The only way you will get flames out of your exhaust would be to dump unburned fuel/air mixture into your exhaust and it ignites on the way out. This is monumentally BAD for your cats and will send them to an early grave. What's worse, is the resulting explosion of the mixture in your cats can damage the honeycomb and cause blockages in your cats resulting in higher backpressure and severe loss of power.


The look that you're going after is caused most often by forced induction blowing extremely hot exhaust through a header, no cats, and a mostly straight pipe. In most movies this is done through post-production trickery.


Scott

No cats so I'm fine hahaha and I'm just gonna see. If it doesn't work I'll have to just give up hahaha too expensive for a supercharger

Lot of dispensaries on the Ave.

In Seattle? Or Lake Wood? Bellevue?

Sweet, I'll probably go for the 101. Don't know what the difference between leaded and unleaded except the leaded one has lead of course. And I'm pretty sure I'll die from lead poisoning. LOL

Well Im making a video for my video class, and few people recommended me I use 100+ octane to see if I can shoot some flames. But other than that, no other reason. haha.

I haven't done too much for my car, I'm waiting for cams to come out to build my internals with cams in. But so far, cold ait intake, semi straight pipe (still got headers)

I'm not gonna drop couple hundred bucks on all these little stuff, saving it for the big bois :happyanim:

Won't happen, even with the exotic fuels. Flames out the rear happen under load, at high rpm, when everything is nice and hot, with no cat's in the system. In other words, while you'll see it at the race track, especially with cars that have been sitting at 5000-7000rpm for the last 30 minutes, you are very unlikely to do it just revving in a driveway.

There used to be a fad of shooting flames out the rear on cars, but they usually resorted to some exotic setups, up to purposely dumping gas into the exhaust and even using a sparkplug at the end of the muffler to provide a spark.

I just filled 92 Octane at the Chevron Extra Mile on 132th Ave in South Everett. I try to only fill there. It was about $3.89 per gallon.

Loan me your straight pipe and I will help you get flames using my car.

How old are you?

ETA: Because F&F.

Unleaded gets the lead out, as in your car will haul ass. Don't EVER let some clown at the gas station put leaded gas in your tank.

Im 19. haha I also heard, lead isn't actually too bad for your car... it apparently coats your engine with lead and according to O'Rieley, that's a good thing... true? Or bullcrap?

Hahaha I'm down, if you have a welding machine and if you can cut my pipes out hahaha

Yeah those people are stupid though. I mean, I'm pretty stupid for trying to do this, but they end up with bbq rear bumper/diffuser. lol not worth it in my opinion haha

Lead was an aphrodesiac. Thats why so many kids were conceived in drive in theaters in the 70's. It had nothing to with booze or weed, it was that exhaust gas that made people fuck like rabbits.

makes sense why my oldest sister is so damn stupid. LOL. but anyways, are you around the area? One of the user on this forum hit me up and asked to go down to Auburn for some racing fuel :happyanim:

What? Those "stupid" people are runnnig exotic engine setups. When you see flames from the ass end of a car, it usually means just a tad bit more output than stock. It's not just there to look cool, like in some retarded movies.

Nah, some people have bolt on fuel lines to the exhaust and a sparkplug to make fake flames. hahaha and it burns their bumper, literally.

Well...

It's a great way to boost the octane a LOT, and I have actually heard that it's good for the valves (though I don't remember the details), but it's toxic and it will wreck your cats in no time.

No cats and a rich tune (or bouncing off the rev limit) counts as exotic now? That's all it takes to shoot flame out the exhaust...

This is a little odd. I run 91 E0 as can be had at quite a few CFN's in the area.

I run 110 Racing fuel in my 2-stroke quad, but that stuff is only $8.50 a gallon down here...