mileage

D15, D16, D17 and Mini-Me swaps
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mileage

By tigerafro
- Fri Aug 07, 2009 6:12 pm #136584 i put on my header and now im getting 20 mpg less now. is that normal?

i have a d16z6 and for a week i ran with a broken o2 sensor. also i have cold air and stock exhaust. i put in mid grade gas.

By dawg316
- Fri Aug 07, 2009 7:36 pm #136616 holy smokes 20 MPG less . :lol:

dude its your o2. fix it, swap it, get er goin
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By teal_dx
- Fri Aug 07, 2009 9:13 pm #136636 a bad o2 will do all sorts of bad things for your engine, replace it and things should be back to normal. try not to drive much with a bad o2, your car is probably running extremely rich, which can shorten the life of your cat.

By tigerafro
- Sat Aug 08, 2009 12:01 am #136661 i changed it last week. its still running crappy. i disconnected the battery for about three min when i did it.
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