which is better to use Shell 91 or PetroCanada 94?

[WatchmaN]

Originally Posted by wparsons

5whp gained on the stock tune with no difference other than 94 octane vs 91 octane? No offense, but I call BS on that. That's a bigger gain than most exhausts.

I would believe you could gain 5whp by adjusting the tune to take advantage of the higher octane, but on the stock tune I see no way you're gaining 5whp from higher octane unless you were running less than 91 on the first runs.

Call it bullshit if you want we did the test. First run on 91, second on 87 and then 94. If you read french go read this if not then google translate it

http://www.quebecfrs.com/forums/view...php?f=6&p=2962
http://www.burn-out.ca/content/scion...ne-test%C3%A9s

[wparsons]

Was the car driven enough between runs for the ECU to adjust? Was the tank totally drained before adding the new fuel?

Any data logs to see what the ECU was doing with different grades?

Did you only do a single pull with each octane rating, or did you do at least three of each to get a good average?

[Future]

google translate? http://translate.google.com/translat...3D2962&act=url

[MiniGuy]

Originally Posted by grgonium

For those of you getting 400 - 600+ kms per tank ... how much of it is Highway, and is your car MT or AT?

For some reason I'm only getting 320-380 kms per tank. (filling up as soon as the light goes on, on the higher end)

I drive ALL city, mostly traffic, and lots of stop lights. Could have an effect?

I am in Vancouver and I feel your pain. I am stop and go traffic most of the time and struggle to get 400k from a tank. You have to get out and cruise the open road to get better mileage. This is my daily driver (MT) and I love it but better MPG l/100k would be nice.

[fenton]

Originally Posted by wparsons

5whp gained on the stock tune with no difference other than 94 octane vs 91 octane? No offense, but I call BS on that. That's a bigger gain than most exhausts.

I would believe you could gain 5whp by adjusting the tune to take advantage of the higher octane, but on the stock tune I see no way you're gaining 5whp from higher octane unless you were running less than 91 on the first runs.

The FRS manual specifically calls for 93-94 octane. The ECU is designed to use the highest ignition timing if it can, for that it needs 94. 91 is the bare minimum.

Yes it works fine on 91 but you wont get the same performance.

I use Husky 94 almost exclusively and my mileage will range from about 450 to 600 depending on how i drive.

If i drive like a mad man i get about 450 if i drive nice i get 600.

See my fuelly

https://www.fuelly.com/driver/fenton108/frs

[BioRage]

Originally Posted by fenton

The FRS manual specifically calls for 93-94 octane. The ECU is designed to use the highest ignition timing if it can, for that it needs 94. 91 is the bare minimum.

Yes it works fine on 91 but you wont get the same performance.

I use Husky 94 almost exclusively and my mileage will range from about 450 to 600 depending on how i drive.

If i drive like a mad man i get about 450 if i drive nice i get 600.

See my fuelly

https://www.fuelly.com/driver/fenton108/frs

But... but.. Airmiles>PetroPoints

[fenton]

Originally Posted by BioRage

But... but.. Airmiles>PetroPoints

I use the husky loyalty card plus the husky mastercard.

2 x points for getting premium, another 2x points for using mastercard.

1$ = 1 point

55$ fill x 2 x 2 = 220 points a fill

700 points gets you 5 bucks off.

Plus when i use my MC for other purchases i still get 1 point.

Since i got the card i get 5 or 10 bucks off each fill. Been making some large purchases on the card but still, adds up fast

[wbradley]

Too bad the few Husky stations I have seen in ON only sell lower octane fuel and have been known to cause runon/knock in the past.

[fenton]

Originally Posted by wbradley

Too bad the few Husky stations I have seen in ON only sell lower octane fuel and have been known to cause runon/knock in the past.

Weird. Every Husky station in Calgary has 94 octane that i have found. Petro is just starting to get 94 in some of their stations.

As far as the power differential look at the difference when applied to a modern BMW engine.

See here for DYNO and ignition advance. Maybe i will get out and log something like this with the FRS>
http://www.westernsubaruclub.com/smf...?topic=28920.0

[BioRage]

Originally Posted by fenton

Weird. Every Husky station in Calgary has 94 octane that i have found. Petro is just starting to get 94 in some of their stations.

As far as the power differential look at the difference when applied to a modern BMW engine.

See here for DYNO and ignition advance. Maybe i will get out and log something like this with the FRS>
http://www.westernsubaruclub.com/smf...?topic=28920.0

Lol all our petro's have 94 :P

[wparsons]

^^ Not all do, a good percentage still top out at 91 octane.

[roddy]

Around here, the only Petro stations that have 94 are the ones that used to be Sunoco stations.

[whitejdm]

Not sure on petrocan 94 but I know husky's 94 octane comes from the ethanol content and I'll take 91 with no ethanol any day.

[chenshuo]

isnt Husky owned by Shell? so does it use Shell gas?