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Old 01-30-2013, 10:42 AM   #1
Scooby Guru
Member#: 134005
Join Date: Dec 2006
Chapter/Region: MAIC
Location: Pittsburgh, PA
2004 WRX Premium

Default 91 vs 93 OST Map for Gas Mileage

I originally bought the car with the stage 2 93 oct map, but noticed some pinging when testing some WOT runs. I switched to the 91 oct map and have continued to use 93 oct fuel... the pinging has completely gone away, however, my gas milage has dropped to 16-18 MPG over the past 2-3 months I've been tracking it. I used to get 19-22 with the same exact driving habits and route.

Could the tune be effecting my results, or can I solely blame this on winter gas and cold weather?

2004 WRX, Cobb turboback and SF intake
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Last edited by cmiovino; 03-14-2013 at 01:29 PM.
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