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Check out my logs... I'm getting horrible MPG. Any ideas?

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Old 01-13-2010, 02:13 PM
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Default Check out my logs... I'm getting horrible MPG. Any ideas?

Both of these logs were after a couple mile trip on NEW 02s... I've been through about 5 02s in the last couple months, and the car has barely been driven... Plugs were changed when the problem started a couple months ago as well. The car has 42lb green tops. I'm getting 6-7 mpg.
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Old 01-16-2010, 08:42 PM
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bump.
Old 01-17-2010, 06:34 AM
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Looks like something going on with LTFT B2 maybe a bad exhaust leak, are you tuned for the injectors?

Post your tune please.
Old 01-17-2010, 09:52 AM
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I can't read the log. Do you have the correct IFR values in the tune? If the car ran fine before the plug swap, I would recheck all of the plugs and wire connections to make sure they're on correctly.
Old 01-17-2010, 08:01 PM
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I'd say you got a major exhaust leak just going by the logs. Are the injectors a matched set? Send me a copy of your tune and I'll look thru it and see if I can see something that you may have missed, if you want.
Old 01-20-2010, 09:01 PM
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Sorry for taking so long to get back guys, I appreciate the replies.

Yes, I'm tuned for the injectors, the tune was done a couple yrs ago, and the specs werent out for the injectors yet, so it was kind of "estimated".

Also, the plugs/wires were double checked.

The injectors are a matched set.

I cant figure out how to post the tune... Any advice is appreciated!
Old 01-21-2010, 02:05 PM
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Burning through O2's and bad gas mileage are both tell tale signs of an exhaust leak near or upstream from the oxygen sensor(s).




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