Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

HORRIBLE Gas Mileage... Need Help

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Old Jan 30, 2005 | 09:40 PM
  #16  
wonton2049's Avatar
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Car Info: 2005 STI
i dont really wanna take off the battery cuz i dun wanna lose my radio stations so im just gonna use my accessport to reset it. u think its the same?
Old Jan 30, 2005 | 09:59 PM
  #17  
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Not tryin' to be a nerd, but I think a clear downpipe uppipe and catback will give you better gas mileage because there isn't energy loss to the cats. I noticed MPG gain after I put on a turboback. I get horrible gas mileage, and I think it's either the learning ECU which still has that "Fast" setting to throw in more gas. Or ur like me and you like to enjoy the car =)
Old Feb 6, 2005 | 12:35 AM
  #18  
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Thank you all. it finally got warm out so i decided to change my fuel filter and now my mileage is back to whats normal to me.... im getting about 16-17 miles per gallon city now. thanks.... I-CLUB IS THE SHIZ NITZ!!!!!
Old Feb 6, 2005 | 01:02 AM
  #19  
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Thank you all. it finally got warm out so i decided to change my fuel filter and now my mileage is back to whats normal to me.... im getting about 16-17 miles per gallon city now. thanks.... I-CLUB IS THE SHIZ NITZ!!!!!
Old Feb 7, 2005 | 10:28 PM
  #20  
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How many miles did you have on it when that all started to happen ?

Rush
Old Feb 7, 2005 | 11:57 PM
  #21  
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i had just barely over 18k miles.... i guess i really did get a bad tank of gas. it was pretty sudden that the mileage went bad. after a tank or 2, i noticed my mileage went from16.5 to about 13 then finally to just over 11. i drove that way for a good month until everyone chimed in with their suggestions. thanks again fellas.
Old Feb 8, 2005 | 10:46 AM
  #22  
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You mentioned cold temps outside.

Are you running the defrost?

If you are the defrost runs the AC thus adding more load on the engine and worse gas milage

Try driving for with a full tank and no defrost on....see what happens
Old Feb 8, 2005 | 02:00 PM
  #23  
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rarely even use the defrost. but that wouldnt cause that big of a drop in mileage..... it turned out to be a bda fuel filter. its all good now.
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