From "stay tuned" to T U N E D !!

The knock sensor will make the engine adjust the ignition timing, so there maybe something there. Regardless, if you know your engine is 100% it eliminates one variable and lets you focus on the couple things you think might be going wrong.
 
The knock sensor will make the engine adjust the ignition timing, so there maybe something there. Regardless, if you know your engine is 100% it eliminates one variable and lets you focus on the couple things you think might be going wrong.
Hmmmm

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Thought you might like this one, i30 N (Elantra N) vs Mustang EcoBoost........................................

 
Very close, but I thought the weight of the Mustang would see it lose, obviously the 10 speed and extra torque made the difference.
That drag mode pulls out the stops in the Ecobeast and I'm curious if that i30N was octane learned, people just don't know about this goofy feature on our cars

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What is the HP difference between running higher octane gas with/without performing the octane learning routine?

I think most people don't even realize such a feature exists on the car due to all other makers having ECU's that automatically adjust. I'd love to hear why Hyundai decided to make it a user operated function vs. automatic.
 
What is the HP difference between running higher octane gas with/without performing the octane learning routine?

I think most people don't even realize such a feature exists on the car due to all other makers having ECU's that automatically adjust. I'd love to hear why Hyundai decided to make it a user operated function vs. automatic.
I'm not sure what the difference is but w/o octane learning it makes 14-15 psi, with it learned anywhere from 17-19 psi, I saw 20 flash once

Us owners know, newer owners will have to find out on their own or real the owners manual, it's in there

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I think most people don't even realize such a feature exists on the car due to all other makers having ECU's that automatically adjust. I'd love to hear why Hyundai decided to make it a user operated function vs. automatic.
I did a quick search and it seems it resets every time it detects refueling, to make sure the new fuel is of sufficient octane for maximum boost.
 
I did a quick search and it seems it resets every time it detects refueling, to make sure the new fuel is of sufficient octane for maximum boost.
When over 5 gallons too

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Peoples thinking around octane numbers has always puzzled me, in particular owners of performance orientated vehicles. (Please note these are observations I've made after being on various automotive-based forums for nearly 20 years, not directed at anyone here)

Often the performance variant of a model is generally always the flagship in the range, as in the most expensive. I could never understand why someone would buy the most expensive variant, they fill it with regular fuel. Why would you compromise the performance of your performance vehicle?

I couldn't begin to count the number of times I've read people asking if they can put regular gas in their V8 Mustang. Like, why would you do that? You may as well just buy a Camry. The same would happen with Falcon XR6 Turbo and XR8, Ford tuned them to only just run correctly on regular so that police departments could fuel them with the cheaper fuel. But in the owner's manual, Ford would state that full vehicle performance and economy numbers were achieved on 98-ron premium unleaded (keep in mind Australian RON numbers are rated differently, 98 is the highest pump gas available, which I think is your 93). If you'd just spent the cash on the fast model, why would you use regular?



All of my cars end up with 98-ron premium in them, through necessity (Mustang, XR8, Jaguar) or by choice. The XR6 is the one by choice, it was primarily designed for regular fuel, producing 195 kW (262 hp) and 391 Nm (288 ft-lb). But Ford also designed it to take advantage of higher-octane fuel, so on 95-ron (which I think is your 91), the exact same engine produces 198 kW (266 hp) and 409 Nm (302 ft-lb). Fueled with 98-ron, those numbers swell to 210 kW (282 hp) and 422 Nm (311 ft-lb). So, from a simple change in fuel, you get a 15 kW/20 hp gain. Why leave that on the table?

I actually had to refuel with regular on a road trip many years ago, the only gas station open didn't offer premium. Save for its first fill when brand new, this was after having ran all of its life on 98-ron premium. The engine felt neutered with regular in the tank, it lacking both grunt and overall smoothness. She really didn't like it and I've made sure it always gets premium.

Sorry for the thread hijack, just something I have a "thing" about fuel.
 
My last car, the Berlina Sportswagon, was flex fuel capable, so could run on E85 which has an octane rating of 105. I tried it for a couple of tanks, wow, what a difference. The difference in acceleration was definitely noticeable, but so was the fuel economy, it went from 18mpg down to 10. But I was taking advantage of the extra performance. I looked up what the difference was, so it would increase torque from 290Nm to 310Nm, but weirdly power would drop from 190KW down to 185KW. (213lbft -> 229lbft : 255hp -> 248hp)
 
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Peoples thinking around octane numbers has always puzzled me, in particular owners of performance orientated vehicles. (Please note these are observations I've made after being on various automotive-based forums for nearly 20 years, not directed at anyone here)

Often the performance variant of a model is generally always the flagship in the range, as in the most expensive. I could never understand why someone would buy the most expensive variant, they fill it with regular fuel. Why would you compromise the performance of your performance vehicle?

I couldn't begin to count the number of times I've read people asking if they can put regular gas in their V8 Mustang. Like, why would you do that? You may as well just buy a Camry. The same would happen with Falcon XR6 Turbo and XR8, Ford tuned them to only just run correctly on regular so that police departments could fuel them with the cheaper fuel. But in the owner's manual, Ford would state that full vehicle performance and economy numbers were achieved on 98-ron premium unleaded (keep in mind Australian RON numbers are rated differently, 98 is the highest pump gas available, which I think is your 93). If you'd just spent the cash on the fast model, why would you use regular?



All of my cars end up with 98-ron premium in them, through necessity (Mustang, XR8, Jaguar) or by choice. The XR6 is the one by choice, it was primarily designed for regular fuel, producing 195 kW (262 hp) and 391 Nm (288 ft-lb). But Ford also designed it to take advantage of higher-octane fuel, so on 95-ron (which I think is your 91), the exact same engine produces 198 kW (266 hp) and 409 Nm (302 ft-lb). Fueled with 98-ron, those numbers swell to 210 kW (282 hp) and 422 Nm (311 ft-lb). So, from a simple change in fuel, you get a 15 kW/20 hp gain. Why leave that on the table?

I actually had to refuel with regular on a road trip many years ago, the only gas station open didn't offer premium. Save for its first fill when brand new, this was after having ran all of its life on 98-ron premium. The engine felt neutered with regular in the tank, it lacking both grunt and overall smoothness. She really didn't like it and I've made sure it always gets premium.

Sorry for the thread hijack, just something I have a "thing" about fuel.
No worries Deyon, I get why a mfg would do this but it's the process of how it learns octane learning that's my biggest issue. The one for OL on the street makes my head spin, the freeway OL is easier, basically 70 mph for about 10 mins, must be consistent, then your good to go. Thing is, Mazda has 2 different hp numbers for their 2.5L turbo based on gas, 227 and 252 and I bet it learns quickly compared to how we've gotta do it

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Peoples thinking around octane numbers has always puzzled me, in particular owners of performance orientated vehicles. (Please note these are observations I've made after being on various automotive-based forums for nearly 20 years, not directed at anyone here)

Often the performance variant of a model is generally always the flagship in the range, as in the most expensive. I could never understand why someone would buy the most expensive variant, they fill it with regular fuel. Why would you compromise the performance of your performance vehicle?
The octane ratings here in North America are an average of RON and MON. I agree with your above assessment, however, at least here in the US I can 100% imagine poseurs buying the flagship for the "prestige" and then cheaping out on the gas.

My last car, the Berlina Sportswagon, was flex fuel capable, so could run on E85 which has an octane rating of 105. I tried it for a couple of tanks, wow, what a difference. The difference in acceleration was definitely noticeable, but so was the fuel economy, it went from 18mpg down to 10. But I was taking advantage of the extra performance. I looked up what the difference was, so it would increase torque from 290Nm to 310Nm, but weirdly power would drop from 190KW down to 185KW. (213lbft -> 229lbft : 255hp -> 248hp)
Ethanol has a lot lower energy density than gasoline. The fuel here in the US is generally 10% ethanol, which the gov't now says is an air pollution measure (which may be, I'm vaguely remembering it replaced MTBE in our fuel), but I remember it more as a political nod to the corn farmers here. I also remember the dropoff in fuel economy, which was noticeable at the time, but a distant memory now (I think it was about 20 years ago).

No worries Deyon, I get why a mfg would do this but it's the process of how it learns octane learning that's my biggest issue. The one for OL on the street makes my head spin, the freeway OL is easier, basically 70 mph for about 10 mins, must be consistent, then your good to go. Thing is, Mazda has 2 different hp numbers for their 2.5L turbo based on gas, 227 and 252 and I bet it learns quickly compared to how we've gotta do it
Yeah, it seems pretty crazy what you have to go through.
 
The octane ratings here in North America are an average of RON and MON. I agree with your above assessment, however, at least here in the US I can 100% imagine poseurs buying the flagship for the "prestige" and then cheaping out on the gas.
Same happens with tires. The amount of Mustang's and high performance Falcon's/Commodore's running around with no-name tires just doesn't compute, again they are leaving performance on the table. It's like they can only just afford the car itself, but not the associated maintenance.
 
Same happens with tires. The amount of Mustang's and high performance Falcon's/Commodore's running around with no-name tires just doesn't compute, again they are leaving performance on the table. It's like they can only just afford the car itself, but not the associated maintenance.
There's a couple guys in our local N community running Mucho Macho tires, $400 a set. Even if they're "decent" at first surely they'll go downhill quickly, very quickly! Also and this may come off sounding like a snob, but I'm not putting some no name tire on such a car, that makes me look like a cheap a$$ and makes the car look illegitimate, it's already trying to build itself a rep and this nonsense doesn't help and I'll never participate

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There's a couple guys in our local N community running Mucho Macho tires, $400 a set. Even if they're "decent" at first surely they'll go downhill quickly, very quickly! Also and this may come off sounding like a snob, but I'm not putting some no name tire on such a car, that makes me look like a cheap a$$ and makes the car look illegitimate, it's already trying to build itself a rep and this nonsense doesn't help and I'll never participate

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Never even heard of that tire before LMAO

I’m with you guys. I don’t buy shit tires.


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There's a couple guys in our local N community running Mucho Macho tires, $400 a set. Even if they're "decent" at first surely they'll go downhill quickly, very quickly! Also and this may come off sounding like a snob, but I'm not putting some no name tire on such a car, that makes me look like a cheap a$$ and makes the car look illegitimate, it's already trying to build itself a rep and this nonsense doesn't help and I'll never participate

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The brand name that makes me laugh over here, and tells me you do not care, Linglong. I'm sure someone, somewhere, has bought them for their own car, but you have think it's mostly used car dealers putting them on when they absolutely have to replace a tyre, and you just know it won't be a full set, it'll be one or two only.
 
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