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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Canada > 95 or + Octane gas in Ottawa



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      11-21-2018, 10:21 AM   #1
TheMidnightNarwhal
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95 or + Octane gas in Ottawa

I'm currently running MHD Stage 2 on 93 Octane. I put 94 from petro canada in the car because that is what I'm able to find.

Is there anywhere with 95 Octane? I would really like to run on the highest stage 2 tune.

Preferably top tier gas to

Last edited by TheMidnightNarwhal; 11-21-2018 at 10:28 AM..
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      11-22-2018, 08:34 AM   #2
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How is your corrections with 94 ?

I heard that Canadian 94 is not a true 94 octane. More like ACN 94.

I would be very careful running 93 octane map with Canadian gas. IF you had ethanol thats another story but without that 93 map on 94 Canadian seems like a stretch.

What we need is E30. That would solve all issues.
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      11-22-2018, 09:28 AM   #3
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Quote:
Originally Posted by Pladi View Post
How is your corrections with 94 ?

I heard that Canadian 94 is not a true 94 octane. More like ACN 94.

I would be very careful running 93 octane map with Canadian gas. IF you had ethanol thats another story but without that 93 map on 94 Canadian seems like a stretch.

What we need is E30. That would solve all issues.
Yeah I just learned about that corrections things and that it's bad.

I looked at past MHD logs I had and they are all 0 on 6 cylinders so I'm happy to see that.

Now that you mention tho it might cause issues because if poor 94 gas, I probably be logging and checking time to time.

When corrections occurs that means the gas is like combusting to early right and it's kind of knocking or the car is adapting to prevent that?
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      11-28-2018, 07:14 PM   #4
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Quote:
Originally Posted by Pladi View Post
How is your corrections with 94 ?

I heard that Canadian 94 is not a true 94 octane. More like ACN 94.

I would be very careful running 93 octane map with Canadian gas. IF you had ethanol thats another story but without that 93 map on 94 Canadian seems like a stretch.

What we need is E30. That would solve all issues.
Hey you had me worried a bit so I did 6 logs just to see, did not have to chance to do 2.5K rpm from 3rd all the way up but still, did some flooring.

https://datazap.me/u/themidnightnarwhal/log-1543453780

https://datazap.me/u/themidnightnarw...og=0&data=3-20

Looks fine right? The -5 corrections are normal when normal driving right?
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      11-28-2018, 07:32 PM   #5
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Quote:
Originally Posted by TheMidnightNarwhal View Post
Hey you had me worried a bit so I did 6 logs just to see, did not have to chance to do 2.5K rpm from 3rd all the way up but still, did some flooring.

https://datazap.me/u/themidnightnarwhal/log-1543453780

https://datazap.me/u/themidnightnarw...og=0&data=3-20

Looks fine right? The -5 corrections are normal when normal driving right?
The top log looks good. The second one is just not taken properly. You want to start FULL throttle after 3K RPM. Corrections are ONLY checked at full throttle. So your throttle was full on the top log for a bit and no corrections.

What gas did you have when you took that ?

Knock is an uncontrolled combustion condition. Fuel ignites before it should in the cylinder. The Engine computer will delay the spark after it detects this uncontrolled combustion from a microphone (knock sensor)
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      11-28-2018, 07:55 PM   #6
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Quote:
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The top log looks good. The second one is just not taken properly. You want to start FULL throttle after 3K RPM. Corrections are ONLY checked at full throttle. So your throttle was full on the top log for a bit and no corrections.

What gas did you have when you took that ?

Knock is an uncontrolled combustion condition. Fuel ignites before it should in the cylinder. The Engine computer will delay the spark after it detects this uncontrolled combustion from a microphone (knock sensor)
I've got 3 logs per links to btw.

Gas in there is the petro canada 94 oct, running stage 2 93 octane.

But like, as long as I don't hear knock or get warning or codes in the end it should still be fine right? The corrections when they happen is to prevent knock, and once you start knocking you would know for sure the gas is no good?
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      11-28-2018, 07:58 PM   #7
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Quote:
Originally Posted by TheMidnightNarwhal View Post
I've got 3 logs per links to btw.

Gas in there is the petro canada 94 oct, running stage 2 93 octane.

But like, as long as I don't hear knock or get warning or codes in the end it should still be fine right? The corrections when they happen is to prevent knock, and once you start knocking you would know for sure the gas is no good?
The way it work is when corrections happen knock has already occurred to some degree. The corrections are there to avoid BIG issues but if your engine knocks a little long term its not good for your piston rings.

You have nothing to worry about
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