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#1
12-24-2004, 07:25 PM
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mpg cut in half 4G15 HELP
okay right when i got my 2001 mitsubishit mirage 1.5 it was getting about 41 mpg. then i stuck a cold air intake, universal exhaust, spark plug wires (ACCEL), and Bosch 4 spark plugs. and it seems to run lean spark plugs have a white coating and my gas mileage is about 20 have no idea can anyone help PLEASE
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#2
12-30-2004, 01:47 PM
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Re: mpg cut in half 4G15 HELP
when ur car gets better performance ur gas milage will drop, but urs seems to have droped too much, i dont know what that could be.
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#3
01-05-2005, 01:04 PM
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Re: mpg cut in half 4G15 HELP
Check your o2 sensors. If you have a bad o2 it could be causing the ecu to think that the car is running lean, and continue to dump in more and more fuel to compensate for it.
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