 | Home > Modifications & Maintenance (L663) > 93 -94 Octane tune |
 
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2823  
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l would imagine that the engine management will automatically adjust for different Octane ratings, so if you used higher Octane fuel it would perform a little better as standard.
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29th Nov 2024 9:47pm |
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| zilch Member Since: 11 Sep 2019 Location: Whitsundays & Sydney Posts: 820 
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according to google 93 octane in the US is the same as 98 octane in Australia, i run mine on 98 and sometimes 95 (US 91??) when 98 is not available.. the vehicle is designed to take either i thought yet another pommie bar steward down under MY20 110 P400 SE Defender MY10 3.0 RR Sport |
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30th Nov 2024 2:57am |
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| Lightwater Member Since: 28 Jun 2020 Location: Sydney NB Posts: 72
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I have a petrol Freelander, it takes 91, but other than the rare occasion like in some outback places in Australia. I always use 98. If I can't get 98 I use 95. Sometimes have to buy 91.
Also carry up to 50L spare fuel. So if I could only get 91 I add some 98. With the higher octane you get longer range. Which is what you want in the outback. Always calculating the usage vs road surface. Like corrugated roads. Headwinds are a killer.  Click image to enlarge Visitor - Freelander owner |
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30th Nov 2024 12:12pm |
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| Aulus Member Since: 24 Nov 2024 Location: Connecticut Posts: 3 
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Ah yes I always forget about the RON to MON conversion.U.S does indeed use MON, and most European uses RON. I cant speak for landrover, but typically cars are tuned for 91 octane, while 91+ won't hurt anything to take full advantage, like advanced timing, betters MPG it must be tuned. So 93/94 MON is just wasted. You could see a slight performance in 93, without a tune but maybe 1% / 2%. But most vehicles are not tuned to recognize it, and most of those effects are placebo. Octane is resistance to pre detonation, and without the tune usually there a very slight decrease in performance. I questioned BAS, to try and tackle this but it seems like they don't have ECU tuned either. So I'm stuck for now. |
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10th Dec 2024 8:41pm |
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| Chicken Drumstick Member Since: 17 Aug 2020 Location: Near MK Posts: 751
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The ECU will only cater so much. I don't know what the LR setup is like or what engine the op has. As default it will likely be set to run at 95RON. In the USA they have more grades of fuel we do however and their high octane fuel could well be better than out 97-99 octane Superunleaded. A dedicated tune would probably allow for more power on higher octane fuels. This is common across the automotive world. No idea if anyone does such a tune for JLR products though. |
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11th Dec 2024 12:33pm |
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