Gas mileage? WTF
11-25-2006, 06:03 PM
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Gas mileage? WTF
Ever since my retune and lt's and cat delete my Mileage sucks. Been getting 10-13 average. I was hoping the Efans and New CAI would help but didnt.
11-25-2006, 11:52 PM
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11-26-2006, 12:26 AM
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How long ago did you remove the catalitic converters? I know that this is typical to loose some MPG when the cats are taken off. I have considered doing this on my truck. How much of a decrease in MPG?
11-26-2006, 05:42 AM
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Originally Posted by Black Nali
How long ago did you remove the catalitic converters? I know that this is typical to loose some MPG when the cats are taken off. I have considered doing this on my truck. How much of a decrease in MPG?
I don't understand how you would loose mpg with no cats? The front 02 sensors are still mantaining a 14.68 a/f ratio, verified by the wideband...
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11-26-2006, 07:14 PM
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tune has been in for a awhile, its taken its course ive had about 3 retunes and its been about 2 months or so since i got the new tune in and 3k miles plus.
11-27-2006, 12:23 AM
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do you have to do a crank relearn when you replace the PCM? in the gm service manual it says you have to do it when you replace the crank pos. sensor of course.