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Thread: Why do i get such bad mpg??
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01-22-2008, 06:44 PM #1
Why do i get such bad mpg??
I have asked almost everyone and they dont understand why i get such terrible gas mileage.
here are my mods to see if yall can help me figure it out why my mpg is sooo bad?
And right now between highway and city driving i get 165 miles to a tank or 13.8 miles a gallon. On 93 supreme.
Dynatech Supermaxx header system
Borla ctaback exhaust
Stage 3 Century racing transmission w/3200 stall
MTI air lid w/K&N air filter
Smooth air bellow
ASP underdrive pully
BMR track pac TQ arm
BMR sub frame connectors
Front and rear BMR sway bar
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01-22-2008, 06:47 PM #2
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01-22-2008, 06:50 PM #3
Ya i thought the same thing but there are plenty other guys running cams and stalls that get better mpg than me they got like 200-230 a tank.
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01-22-2008, 06:52 PM #4
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01-22-2008, 06:53 PM #5
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01-22-2008, 07:28 PM #6
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01-22-2008, 07:29 PM #7
Theres another thread on this subject that would suggest new O2 sensors. Apparently they can just "fade" and slowly eat up your mpg from bad readings as they get older. I don't quite have the mods you do and have a different tranny for that matter, but I did notice im getting shittier mpg all the sudden. So maybe look into some new O2 sensors if your still doubtful on the stall being the problem.
-mike
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01-22-2008, 08:03 PM #8
Have you done all the obvious so far? Air pressure in tires (30-34 psi) checked your air filter, 02 sensors are a huge difference can be, exhaust leak possibly, MAF sensor, and any extra weight can change your mileage.
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01-23-2008, 03:34 AM #9
O2s as mentioned if they have 40K or more on them.
Also, if you spend a lot of time cruising UNDER lockup speed (ie; around town driving) your mileage is going to suck. Need to get that converter locked up to get any mileage at all.
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01-23-2008, 01:31 PM #10
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