state only has 90 octane

bornready · 10-20-2011, 03:45 PM

Any tunes out there that can adapt to 90 octane? Or is set to 90 octane?

Thanks

Q4P · 10-20-2011, 03:59 PM

What state is this? I want to make sure not to go there.

Brey335i · 10-20-2011, 04:17 PM

BMW requires the use of 91 octane minimum right?

What state is this?

jpsimon · 10-20-2011, 04:18 PM

sounds like the worst state ever

303_335i · 10-20-2011, 04:20 PM

It sound like New Mexico

bornready · 10-20-2011, 04:27 PM

Alaska actually

, car runs fine on 90 octane. It's all we got! Is there any tunes out there for 91 octane that is adaptive? So it can readjust to the crappier fuel we have?

Apogee · 10-20-2011, 04:39 PM

I have noticed by putting 91 octane in my car that the car still runs rich...im sure 90 octane isn't going to mess up the vehicle.

bornready · 10-20-2011, 04:49 PM

Quote:

Originally Posted by Apogee

I have noticed by putting 91 octane in my car that the car still runs rich...im sure 90 octane isn't going to mess up the vehicle.

How about with a tune? Aren't they optimized for a specific octane?

CPWINCH · 10-20-2011, 04:52 PM

91 sucks already hahaha.

CPWINCH · 10-20-2011, 04:53 PM

Quote:

Originally Posted by bornready

How about with a tune? Aren't they optimized for a specific octane?

some are, for a higher octane.

Bleep · 10-20-2011, 05:02 PM

Cobb's "drive" map might work, it's tuned for crappy 91 octane Cali gas. You should call them and ask.

rader1 · 10-20-2011, 05:02 PM

Quote:

Originally Posted by Apogee

I have noticed by putting 91 octane in my car that the car still runs rich...im sure 90 octane isn't going to mess up the vehicle.

Octane has nothing to do with the "amount" of fuel injected, but it's resistance to knock

Apogee · 10-20-2011, 05:13 PM

Quote:

Originally Posted by rader1

Octane has nothing to do with the "amount" of fuel injected, but it's resistance to knock

i was speaking in terms of boost...doesn't a higher amount of octane let you run more boost? on my evo I was running 24psi on 93 octane on E85 i was running 35 psi

Apogee · 10-20-2011, 05:14 PM

Quote:

Originally Posted by bornready

How about with a tune? Aren't they optimized for a specific octane?

tuning the car will definately make it run better and safer...get a conservative tune and you will be good to go.

sear · 10-20-2011, 05:15 PM

OP, you might be OK with any tune since the octane limit is really to prevent knock. part of the equation that will produce knock is going to be IATs. In Alaska, IATs are going to be on average lower than would be seen in the rest of north america.
Additionally, a tune that you can adjust max boost and log timing would also be useful. This way you can get an idea of where you stand running on the gas you have available and back off boost as needed. Good luck, even being limited to 91oct isn't fun

rader1 · 10-20-2011, 05:21 PM

Quote:

Originally Posted by Apogee

i was speaking in terms of boost...doesn't a higher amount of octane let you run more boost? on my evo I was running 24psi on 93 octane on E85 i was running 35 psi

Yes, higher octane theoretically means you can run higher boost. But it doesnt mean it will be "richer." 12:1AFR at 35psi is more fuel than 12:1AFR at 10psi, but it's still the same as the AFR is concerned.

Skydive · 10-20-2011, 05:31 PM

Install a meth kit.

bornready · 10-20-2011, 06:06 PM

Thanks for the info everyone. Right now I'm weighing my options. Since I have warranty until 2015, I probably will only be running a tune w/ no meth unfortunately. So Cobb has a 91 file?

Slow_335i · 10-20-2011, 06:10 PM

buy octane booster?

bornready · 10-20-2011, 06:12 PM

Quote:

Originally Posted by Slow_335i

buy octane booster?

We have vendors here that supply torco, but I don't really know much about them. How reliable are octane boosters?

Slow_335i · 10-20-2011, 06:18 PM

Quote:

Originally Posted by bornready

We have vendors here that supply torco, but I don't really know much about them. How reliable are octane boosters?

don't know much about the reliability of it but all it's going to do is raise your octane count to maybe 92/93 so if anything it may help a little.

I've used it a couple time in my old car when stations wouldn't have the right octane and I had zero problems.

RnmEvo9 · 10-20-2011, 06:19 PM

Quote:

Originally Posted by Apogee

i was speaking in terms of boost...doesn't a higher amount of octane let you run more boost? on my evo I was running 24psi on 93 octane on E85 i was running 35 psi

35psi on E85...hopefully not on stock turbo as that is out of its efficiency range.

10-20-2011, 03:45 PM	#1
bornready Private 7 Rep 81 Posts Drives: n55 e90 335i Join Date: Oct 2011 Location: United States iTrader: (0)	state only has 90 octane Any tunes out there that can adapt to 90 octane? Or is set to 90 octane? Thanks
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10-20-2011, 03:59 PM	#2
Q4P Colonel 83 Rep 2,291 Posts Drives: Too Much Join Date: Apr 2011 Location: World iTrader: (0)	What state is this? I want to make sure not to go there. __________________ 2jZ + RB26 + 4G63 + LS9 + N54 =
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10-20-2011, 04:17 PM	#3
Brey335i Banned 112 Rep 4,771 Posts Drives: e46 ///M3 Join Date: Oct 2009 Location: Austin, TX iTrader: (11)	BMW requires the use of 91 octane minimum right? What state is this?
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10-20-2011, 04:18 PM	#4
jpsimon Team Zissou 3065 Rep 10,197 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	sounds like the worst state ever
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10-20-2011, 04:20 PM	#5
303_335i New Member 0 Rep 14 Posts Drives: 07 JB4 335i Join Date: Jun 2010 Location: 303 iTrader: (4)	It sound like New Mexico
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10-20-2011, 04:27 PM	#6
bornready Private 7 Rep 81 Posts Drives: n55 e90 335i Join Date: Oct 2011 Location: United States iTrader: (0)	Alaska actually , car runs fine on 90 octane. It's all we got! Is there any tunes out there for 91 octane that is adaptive? So it can readjust to the crappier fuel we have?
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10-20-2011, 04:39 PM	#7
Apogee Second Lieutenant 3 Rep 232 Posts Drives: 335d/Lancer Evolution X Join Date: Oct 2011 Location: Olympia, Washington iTrader: (1)	I have noticed by putting 91 octane in my car that the car still runs rich...im sure 90 octane isn't going to mess up the vehicle.
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10-20-2011, 04:52 PM	#9
CPWINCH Brigadier General 734 Rep 4,635 Posts Drives: Toyota Prius Join Date: May 2010 Location: Los Angeles iTrader: (7)	91 sucks already hahaha. __________________ Follow my BMW instagram @CARMODIFICATION Let me know you are from bimmerpost and i'll follow back
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10-20-2011, 05:02 PM	#11
Bleep First Lieutenant 9 Rep 369 Posts Drives: 3 Join Date: Jan 2011 Location: CT iTrader: (0)	Cobb's "drive" map might work, it's tuned for crappy 91 octane Cali gas. You should call them and ask.
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10-20-2011, 05:15 PM	#15
sear Lieutenant 18 Rep 462 Posts Drives: 2007 335xi Join Date: Sep 2009 Location: Colorado Springs iTrader: (0)	OP, you might be OK with any tune since the octane limit is really to prevent knock. part of the equation that will produce knock is going to be IATs. In Alaska, IATs are going to be on average lower than would be seen in the rest of north america. Additionally, a tune that you can adjust max boost and log timing would also be useful. This way you can get an idea of where you stand running on the gas you have available and back off boost as needed. Good luck, even being limited to 91oct isn't fun
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10-20-2011, 05:31 PM	#17
Skydive First Lieutenant 5 Rep 300 Posts Drives: '07 E90 335i Join Date: Nov 2010 Location: Los Angeles, CA iTrader: (0)	Install a meth kit. __________________ DD: 2007 BMW 335i Sedan Weekends: 2004 Porsche 911 C4S
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10-20-2011, 06:06 PM	#18
bornready Private 7 Rep 81 Posts Drives: n55 e90 335i Join Date: Oct 2011 Location: United States iTrader: (0)	Thanks for the info everyone. Right now I'm weighing my options. Since I have warranty until 2015, I probably will only be running a tune w/ no meth unfortunately. So Cobb has a 91 file?
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10-20-2011, 06:10 PM	#19
Slow_335i Daily Driven! 186 Rep 2,516 Posts Drives: BMW 335i Join Date: Jun 2011 Location: Central Illinois iTrader: (11) Garage List 2008 BMW 335I [7.02]	buy octane booster? __________________
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