Right gas makes big difference - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Carbon420 · 02-19-2013, 10:18 AM

So I'm a bit of a noob in the world of nicer cars, and knew that my car needed premium gas. So I was using premium. Not realizing that 91 octaine (the standard premium grade here in Canada) was actually 2 octain short of what she really needed. Some stations in Calgary carry 94 octaine at about 2 cents more per litre. So I ran my tank till the light came on and gave her a bit of 94 to test out if it was really that big a deal. And we'll it is. I can't even begin to imagine what it would be like running this on 87 after the differences I've noticed just from this. She sounds better she feels better and she delivers alot more now. And the comp says I'm coming in a good 1 liter per 100 kilometres less on my average. I'm not a math wizard but I think this is actually saving me a bit of cash of not breaking about even.

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Obja · 02-19-2013, 10:23 AM

yeah don't use 87 bro... nooooooooooooooooo

Carbon420 · 02-19-2013, 10:37 AM

Quote:

Originally Posted by Obja

yeah don't use 87 bro... nooooooooooooooooo

Read again. Never did. Said I couldn't imagine how bad it would be to use considering the difference between 91 and 94.

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FRiSson · 02-19-2013, 10:41 AM

Subject-expectancy effect

Efferalgan · 02-19-2013, 11:26 AM

The sticker on the inner side of the fuel tank cap of my GT86 says "АИ 98" only (equals to your 94 octane number) - so I wonder why given that if you guys fill-in tanks with your 87 and it still works

DarkSunrise · 02-19-2013, 12:32 PM

Seems like the factory ECU pulls a lot of timing on these cars, even on 91/93 gas. Hence the reason resetting the ECU recovers a lot of hp on the dyno. Not surprising to me that you'd notice a difference switching from 91 to 94.

Carbon420 · 02-19-2013, 02:15 PM

Quote:

Originally Posted by DarkSunrise

Seems like the factory ECU pulls a lot of timing on these cars, even on 91/93 gas. Hence the reason resetting the ECU recovers a lot of hp on the dyno. Not surprising to me that you'd notice a difference switching from 91 to 94.

Yeah I just wish someone at the dealer had mentioned something about the proper gas when I bought it. Like I said I knew she needs premium and I was using it. They should warn you you need better than premium though.

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KingGeo · 02-19-2013, 04:57 PM

it can depend however. most people around here (ontario) can only get 94 with 10-15% ethanol and it has been not so great after a while. the crickets come to life!
when using 91 with 0 ethanol seems to keep things quiet.

give it a few tanks before you rejoice.

Rayme · 02-19-2013, 04:59 PM

I really wonder if 94 would make a big difference over 91 over here. The weather is so cold I wonder if it would really effect timing retard in the winter.

Wattage · 02-19-2013, 06:04 PM

"octane"

roddy · 02-19-2013, 09:10 PM

Quote:

Originally Posted by KingGeo

it can depend however. most people around here (ontario) can only get 94 with 10-15% ethanol and it has been not so great after a while. the crickets come to life!
when using 91 with 0 ethanol seems to keep things quiet.

give it a few tanks before you rejoice.

Quote:

Originally Posted by ottopilot

I really wonder if 94 would make a big difference over 91 over here. The weather is so cold I wonder if it would really effect timing retard in the winter.

I don't find a big difference when it is this cold out, but in the heat of summer, the car does run and respond noticeably better on the 94. However, that is when the crickets rear their ugly little heads as well. Does the 94 out west have ethanol in it?

Rich1 · 02-20-2013, 11:03 AM

After reading the above, and although I'm leasing the car I still put 91 Shell into it.

At PDI my dealer insisted that I use regular 87 octane only.

I guess just before I return it, the gas won't matter...

Sport-Tech · 02-20-2013, 11:43 AM

So still no fix for the crickets? They'd better nail this for the '14s.

Future · 02-20-2013, 12:03 PM

Been saying it for a while too... there IS a huge difference with 94 octane.. Always ran 94, two weeks ago had to fuel with 91.. omg car felt old.

02-19-2013, 10:18 AM	#1
Carbon420 Senior Member Join Date: Nov 2012 Drives: 2013 FR-S Raven with carbon fiber Location: Calgary, Alberta, Canada Posts: 162 Thanks: 1 Thanked 25 Times in 22 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Right gas makes big difference So I'm a bit of a noob in the world of nicer cars, and knew that my car needed premium gas. So I was using premium. Not realizing that 91 octaine (the standard premium grade here in Canada) was actually 2 octain short of what she really needed. Some stations in Calgary carry 94 octaine at about 2 cents more per litre. So I ran my tank till the light came on and gave her a bit of 94 to test out if it was really that big a deal. And we'll it is. I can't even begin to imagine what it would be like running this on 87 after the differences I've noticed just from this. She sounds better she feels better and she delivers alot more now. And the comp says I'm coming in a good 1 liter per 100 kilometres less on my average. I'm not a math wizard but I think this is actually saving me a bit of cash of not breaking about even. Sent from my iPhone using Tapatalk

02-19-2013, 12:32 PM	#6
DarkSunrise Senior Member Join Date: Apr 2012 Drives: 22 BRZ (Previously 13 FR-S) Location: USA Posts: 5,797 Thanks: 2,186 Thanked 4,243 Times in 2,221 Posts Mentioned: 48 Post(s) Tagged: 2 Thread(s)	Seems like the factory ECU pulls a lot of timing on these cars, even on 91/93 gas. Hence the reason resetting the ECU recovers a lot of hp on the dyno. Not surprising to me that you'd notice a difference switching from 91 to 94. __________________ "Never run out of real estate, traction, and ideas at the same time." 2022 BRZ Build 2013 FR-S Build

02-19-2013, 04:59 PM	#9
Rayme The Answer Join Date: Sep 2012 Drives: Mazda 2 Location: Moncton, NB Posts: 1,233 Thanks: 488 Thanked 661 Times in 315 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I really wonder if 94 would make a big difference over 91 over here. The weather is so cold I wonder if it would really effect timing retard in the winter. __________________ \| Roof wrap thread

02-20-2013, 11:03 AM	#12
Rich1 Senior Member Join Date: Jul 2012 Drives: Cadillac DeVille DHS Location: Toronto Posts: 127 Thanks: 9 Thanked 13 Times in 9 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	My dealer recommended regular gas After reading the above, and although I'm leasing the car I still put 91 Shell into it. At PDI my dealer insisted that I use regular 87 octane only. I guess just before I return it, the gas won't matter...

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02-19-2013, 10:41 AM	#4
FRiSson Senior Member Join Date: Jun 2012 Drives: FR-S MT Location: New England Posts: 1,081 Thanks: 118 Thanked 483 Times in 241 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Subject-expectancy effect

02-19-2013, 11:26 AM	#5
Efferalgan Senior Member Join Date: Sep 2012 Drives: 2025 BRZ, ex-2012 GT86 Location: Dubai Posts: 466 Thanks: 422 Thanked 234 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	The sticker on the inner side of the fuel tank cap of my GT86 says "АИ 98" only (equals to your 94 octane number) - so I wonder why given that if you guys fill-in tanks with your 87 and it still works

02-19-2013, 04:57 PM	#8
KingGeo Senior Member Join Date: May 2012 Drives: FRS Location: Ottawa, ON Posts: 437 Thanks: 337 Thanked 218 Times in 98 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	it can depend however. most people around here (ontario) can only get 94 with 10-15% ethanol and it has been not so great after a while. the crickets come to life! when using 91 with 0 ethanol seems to keep things quiet. give it a few tanks before you rejoice.

02-19-2013, 06:04 PM	#10
Wattage Member Join Date: Nov 2012 Drives: scion fr-s MT Location: Toronto Posts: 96 Thanks: 61 Thanked 56 Times in 19 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	"octane"

02-20-2013, 11:43 AM	#13
Sport-Tech Senior Member Join Date: Oct 2010 Drives: TBD Location: Toronto Posts: 2,583 Thanks: 665 Thanked 685 Times in 386 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	So still no fix for the crickets? They'd better nail this for the '14s.

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