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Old 08-25-2011, 10:03 PM   #2
moonrider_99
Scooby Specialist
 
Member#: 258628
Join Date: Sep 2010
Chapter/Region: Tri-State
Location: PA
Vehicle:
2009 WRX stg2-SOLD
2012 MS3

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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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