93 octane is recommended
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93 AKI is recommended fuel but 90 AKI is alternative fuel. 86 AKI is the minimum "emergency" fuel.
California in general, the best we can get is 91 AKI. There are a few stations offer 100 AKI racing fuel but they are very expensive.
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We can get 94 octane here in Canada at some petrol stations. I can tell you that it does make a seat of the pants difference. I can feel the car pull timing with lower grade fuel. Boostane is a product available to help out. Check out the reviews on YouTube and interwebs.
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With that being the case, I can't help but wonder about using 100 octane racing fuel. My Shelby is supposed to be able to benefit from it, but in practice I didn't really notice much change if any from the couple of tanks I ran through it.
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100 octane would not be any more benefit than the required 93. I am only stating that the recommended octane will give the most from the ECU of the car. Less octane the car will run, but not optimally.
If you had the ECU remapped to handle 100 octane you would see that benefit. Although your wallet would see a bigger drain.
If you had the ECU remapped to handle 100 octane you would see that benefit. Although your wallet would see a bigger drain.
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I don't recall where I heard or read it (perhaps from my PCA-racer SA?) but I have the distinct impression of this factory-stated support for lower-octane fuel in the 718 being a marked change in Porsche practice. Are turbo engines generally regarded as being less dependent on minimum (high) octane fuel than equivalent high-performance n/a engines?
If it *is* a change introduced with the 9A2 turbos, I wonder if Porsche factory horsepower ratings are based on the lower octane fuel -- that would explain how (with all other variables controlled) 718 S real-world performance data aligns with the 3.8 liter 991.1 Carrera S factory-rated 400hp.....
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In Europe the spec hp/tq is with the recomended fuel wich is 98 octane ( 94 AKI)
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Don't think 92 verses 93 will make a real big difference........but I know we car crazy people are the way we are.:laugh:
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In late August last year, Hurricane Harvey created fuel shortages in parts of the country, including the Dallas area. For several days, Premium (93 octane) and Plus (91 octane) fuel were nearly impossible to find unless one traveled well outside the city.
I'd had my 718 for less than three weeks when Harvey hit, so I was in break-in mode. Egad, eh?
Not really. Based on that experience and on road trips to places where 93 isn't even available, I now carry a bottle of octane booster in my car.
If you're in an area where 93 isn't common, I'd find places where it is available and do your best to top up at those places. Otherwise, it's not a bad idea to work in an octane booster if you're really concerned or hard-up for anything above 90 or 91.
I'd had my 718 for less than three weeks when Harvey hit, so I was in break-in mode. Egad, eh?
Not really. Based on that experience and on road trips to places where 93 isn't even available, I now carry a bottle of octane booster in my car.
If you're in an area where 93 isn't common, I'd find places where it is available and do your best to top up at those places. Otherwise, it's not a bad idea to work in an octane booster if you're really concerned or hard-up for anything above 90 or 91.
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I regularly use 94 octane in my car. I wanted to experiment to see if lower octane gas would affect the car's performance. On an empty tank, I filled up with 91 octane gas and the car felt lethargic. After finishing the 91 octane, I put 94 octane back in and I noticed better throttle response and power. I guess I will stick with filling up on 94 octane.
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93 here in Ohio!
I have used the 94 you can get here at former Sunoco stations, but primarily use ethanol free 91. No discernable difference in performance.
Different index. You use RON, whereas North Americans use AKI. 99 RON is 93 AKI.
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We have access to 93 octane with Ethanol and Ethanol-free 92 octane...both top tier. There's probably no discernible performance difference between 92 & 93 octane, at least using my butt dyno. Regardless, I'm not a fan of using Ethanol, so I'm leaning toward Ethanol-free 92 octane. Which would you prefer in your 718 for daily driving and would it be the same for track days?
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Go with the non-ethanol. Otherwise, in FL I run 93, which all premium gas is, and if you can find non-ethanol it will only be 89.
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