Effect of using 100 RON fuel on non-tuned N54?

Aashenfox · 01-22-2015, 05:50 PM

Hey folks, so I've got an 08 335xi AT with an Akrapovic cat-back I bought just yesterday (the car, not the pipe). I don't know what fuel the previous owner was using, but I could find out if it really matters, and the car has ridiculously low mileage.

Here in Eastern Europe we have free access to many 'super' unleadeds, such as Shell V-Power Racing 100 RON, as well as regular V-power etc etc. The price of the super isn't 'that' much more, especially for someone like me who hardly ever uses the car (2000 miles a year).

I've been told by 2 gas station owners independently that the super unleaded pumps always have less crap in the filters, and that they are a cleaner fuel, so that is always a consideration, if valid.

I think the true octane rating of these fuels is 96-97, anyway...I do plan on tuning sooner or later, but currently the car is on stock BMW settings.

Should I be using the super fuel anyway? Or will it make zero difference? And if it makes zero difference, would it still not be worth it, assuming that the fuel is cleaner, if that assertion is accurate? cleaner fuel's always gotta be better, right? Thanks in advance for thoughts.

TheYuriPanda · 01-22-2015, 05:57 PM

I'm not a scientist or really good with fuel. But I don't think it'll make a difference without a tune. Plus your paying more.

proTUNING Freaks · 01-22-2015, 10:10 PM

Effect you wouldn't want, a waste of money.

Aashenfox · 01-23-2015, 01:45 AM

Ok, PTF, what if I was using the JB4, I know I don't have the required supporting mods to run map 7 yet, and I assume map 1 would also not take advantage of the fuel. Any way I can use the fuel in a worthwhile way before being ready for map 7?

TheYuriPanda · 01-23-2015, 08:42 AM

Quote:

Originally Posted by Aashenfox

Ok, PTF, what if I was using the JB4, I know I don't have the required supporting mods to run map 7 yet, and I assume map 1 would also not take advantage of the fuel. Any way I can use the fuel in a worthwhile way before being ready for map 7?

Why are you wanting to run it so fast? Should save the money you'd be wasting on the fuel, just get what you need to pass by, and save for supporting mods to use the fuel. Won't be much use. If you get a jb4, you can try map 5. Idk how much it'll let you go.

marv85 · 01-23-2015, 11:06 AM

Quote:

Originally Posted by Aashenfox

Ok, PTF, what if I was using the JB4, I know I don't have the required supporting mods to run map 7 yet, and I assume map 1 would also not take advantage of the fuel. Any way I can use the fuel in a worthwhile way before being ready for map 7?

with no backend flash, any map on the JB4 (besides stock maps) will benefit from the higher octane

Aashenfox · 01-23-2015, 11:29 AM

Quote:

Originally Posted by TheYuriPanda

Why are you wanting to run it so fast? Should save the money you'd be wasting on the fuel, just get what you need to pass by, and save for supporting mods to use the fuel. Won't be much use. If you get a jb4, you can try map 5. Idk how much it'll let you go.

It's a couple cents on the liter difference, negligible, we're talking 100 bucks saved a year maybe, if I needed money that bad I wouldn't have bought a fast beamer. I want to use it because I know at the end of the day octane is the key to power, plus I'm led to understand that the fuel is cleaner.

Map 5 is the one that adapts to what you've got, isn't it... I figured that would be my best bet, but hey, since as mentioned above, all higher boost maps would benefit, that's really the info I was looking for.

Thanks v much guys.

TheYuriPanda · 01-23-2015, 11:54 AM

Quote:

Originally Posted by Aashenfox

Quote:

Originally Posted by TheYuriPanda

Why are you wanting to run it so fast? Should save the money you'd be wasting on the fuel, just get what you need to pass by, and save for supporting mods to use the fuel. Won't be much use. If you get a jb4, you can try map 5. Idk how much it'll let you go.

It's a couple cents on the liter difference, negligible, we're talking 100 bucks saved a year maybe, if I needed money that bad I wouldn't have bought a fast beamer. I want to use it because I know at the end of the day octane is the key to power, plus I'm led to understand that the fuel is cleaner.

Map 5 is the one that adapts to what you've got, isn't it... I figured that would be my best bet, but hey, since as mentioned above, all higher boost maps would benefit, that's really the info I was looking for.

Thanks v much guys.

Map 5 will be the best.
Also didn't know the price of gas around you,

Running map 7 without supporting mods could end badly. All maps could use higher octane as mentioned but maps 1 and 2 which are locked psi will push those amounts regaurdless.
Map 5 could go up to 17 if I remember correctly. That's what inreccomend

01-22-2015, 05:50 PM	#1
Aashenfox Captain 128 Rep 663 Posts Drives: 08 E92 335xi 6AT Join Date: Jan 2015 Location: Brit in Greece iTrader: (0)	Effect of using 100 RON fuel on non-tuned N54? Hey folks, so I've got an 08 335xi AT with an Akrapovic cat-back I bought just yesterday (the car, not the pipe). I don't know what fuel the previous owner was using, but I could find out if it really matters, and the car has ridiculously low mileage. Here in Eastern Europe we have free access to many 'super' unleadeds, such as Shell V-Power Racing 100 RON, as well as regular V-power etc etc. The price of the super isn't 'that' much more, especially for someone like me who hardly ever uses the car (2000 miles a year). I've been told by 2 gas station owners independently that the super unleaded pumps always have less crap in the filters, and that they are a cleaner fuel, so that is always a consideration, if valid. I think the true octane rating of these fuels is 96-97, anyway...I do plan on tuning sooner or later, but currently the car is on stock BMW settings. Should I be using the super fuel anyway? Or will it make zero difference? And if it makes zero difference, would it still not be worth it, assuming that the fuel is cleaner, if that assertion is accurate? cleaner fuel's always gotta be better, right? Thanks in advance for thoughts.
	Appreciate 0 Tweet Quote

01-22-2015, 05:57 PM	#2
TheYuriPanda First Lieutenant 75 Rep 390 Posts Drives: 335i XDrive E90 2010 Join Date: Aug 2014 Location: Colorado iTrader: (0)	I'm not a scientist or really good with fuel. But I don't think it'll make a difference without a tune. Plus your paying more. __________________ My Build Thread: http://www.e90post.com/forums/showth...8#post16918878
	Appreciate 0 Quote

01-22-2015, 10:10 PM	#3
proTUNING Freaks 4581 Rep 1,859 Posts Drives: powered by bootmod3 Join Date: Oct 2014 Location: www.protuningfreaks.com \| www.bootmod3.com iTrader: (0)	Effect you wouldn't want, a waste of money. __________________ YouTube Channel [NEW] \| Facebook User Group (20,000+ members) \| Tech Support Website \| Wiki \| FAQ \| iOS App \| Android App \| bootmod3 Web Sales Support Email: sales@protuningfreaks.com \| Tech Support Email: support@protuningfreaks.com
	Appreciate 0 Quote

01-23-2015, 01:45 AM	#4
Aashenfox Captain 128 Rep 663 Posts Drives: 08 E92 335xi 6AT Join Date: Jan 2015 Location: Brit in Greece iTrader: (0)	Ok, PTF, what if I was using the JB4, I know I don't have the required supporting mods to run map 7 yet, and I assume map 1 would also not take advantage of the fuel. Any way I can use the fuel in a worthwhile way before being ready for map 7?
	Appreciate 0 Quote