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Old 08-25-2011, 12:55 AM   #1
Bunta's Blue Beast
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Join Date: Dec 2007
Default Why no 93 octane eco map??

Why is there only a 91 octane economy map vs using a 93 octane economy map? Wouldn't their be a benefit, you could run more timing and/or a leaner fuel map? Please no bashing on the economy map and why it doesn't work . Educated responses please.


I believe the key to getting better mpg would be to tune the car to allow more power at lower rpms to allow the car to reach traffic speed faster and with the least amount of throttle instead of merely limiting the amount of boost you can make. Now this is easier said than done with a low displacement low compression engine but I'd imagine that an AVCS motor might make things easier.
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Old 08-25-2011, 11:03 PM   #2
moonrider_99
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Chapter/Region: Tri-State
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2012 MS3

Default

Quote:
Originally Posted by Bunta's Blue Beast
Why is there only a 91 octane economy map vs using a 93 octane economy map? Wouldn't their be a benefit, you could run more timing and/or a leaner fuel map? Please no bashing on the economy map and why it doesn't work . Educated responses please.

I believe the key to getting better mpg would be to tune the car to allow more power at lower rpms to allow the car to reach traffic speed faster and with the least amount of throttle instead of merely limiting the amount of boost you can make. Now this is easier said than done with a low displacement low compression engine but I'd imagine that an AVCS motor might make things easier.
The purpose of the map is to save $$$ on fuel, meaning u run less boost and should be able to run lower octane (cheaper). Why in the world would u try to optimze an econo map for performance or higher level octane?? U want more power? Flash back to the "standard" map. ;-).
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Old 08-26-2011, 12:49 AM   #3
Bunta's Blue Beast
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Default

If you live on the east coast of the country than you know that 90% of us do not have 91 octane available to us. We can only use 87, 89, or 93. That is why a eco map for 93 octane would be beneficial.


Just noticed you live in Tri-State area, I live in Ohio and we do not have 91 octane here in the northeast close to cleveland. When I attended school out in bowling green which is so far west is almost on indiana border they had 91 but thats it.
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Old 08-26-2011, 08:12 AM   #4
moonrider_99
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2009 WRX stg2-SOLD
2012 MS3

Default

Quote:
Originally Posted by Bunta's Blue Beast
If you live on the east coast of the country than you know that 90% of us do not have 91 octane available to us. We can only use 87, 89, or 93. That is why a eco map for 93 octane would be beneficial.

Just noticed you live in Tri-State area, I live in Ohio and we do not have 91 octane here in the northeast close to cleveland. When I attended school out in bowling green which is so far west is almost on indiana border they had 91 but thats it.
I see, I was not aware of this.
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