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Old 12-09-2002, 08:17 PM   #1
imprezey
Scooby Newbie
 
Member#: 17178
Join Date: Apr 2002
Location: palo alto, ca
Vehicle:
2001 2.5RS Coupe
Silverthorn Metallic

Default Poor gas mileage from GC8

my car gets terrible gas mileage. its a MY01 RS that gets a terrible 18 mpg/city. i don't stomp on the gas pedal too much so i doubt it is that. i run 91 octane because i have a proECM, i'm guessin that this is at fault here. i posted about this before but never really got a clear response. i know that with the proECM you need to run higher octance (91) but that the gas mileage should become better, or so i've heard. my other mods include: ganzflow, stromung midpipe, and stromung dual tip. does anyone have a suggestion for me besides taking the proECM out? i was thinking maybe getting Apex'i S-AFC to see if im running rich or something but i'm not quite sure of this route.
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