post #1 of Old 02-23-2007, 11:37 PM Thread Starter
chevyjeep
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1952 M-38 
 
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Miles to the gallon

I have checked my miles to the gallon against what the computor tells me and it is off by 2 MPG higher (19 computor versis 17 calculated ). Is anyone else seeing this and is there a fix. My 1999 S-10 Blazer is almost perfect.



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post #2 of Old 02-24-2007, 03:57 AM
crankitdb711
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It's not used to counting above 15?
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post #3 of Old 02-25-2007, 08:11 AM
redpony03
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are you stick or auto?
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post #4 of Old 02-25-2007, 09:32 AM
jeremy2027
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m computer says i only get 14mpg im going to fill up today and get some actual numbers if im only getting 14mpg it may be time for an intake and exhaust to try and boost those numbers
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post #5 of Old 02-25-2007, 12:14 PM
bookerb
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mine says between 22 and 23, lots of highway driving

1989 Sahara
2004 X
2007 X unlimited
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post #6 of Old 02-25-2007, 12:40 PM
jeepers3
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I filled up my tank yesterday. Computer gave me 13.5mpg since last fillup (auto, city driving). That's down from 14 the previous time, and about 15 the time before that.
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post #7 of Old 02-25-2007, 01:06 PM
Matthew Davis
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My computer reports 17.4 to 17.6. I have not checked to see if it is acurate.
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post #8 of Old 02-25-2007, 01:26 PM
SecondTJ
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sounds normal, the computer is not very accurate.

will it be close for some people, and off for others

'98 Sport, 4.0, AX-15, D44, 3.73, stock w/ 9k original miles

Gone - 2000 Sport, 1987 YJ, 1997 SE
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post #9 of Old 02-25-2007, 07:03 PM
jeremy2027
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Quote:
Originally Posted by jeepers3
I filled up my tank yesterday. Computer gave me 13.5mpg since last fillup (auto, city driving). That's down from 14 the previous time, and about 15 the time before that.
same here i avg'd mine today and it was 13.5 auto 255 70 18 4.10 gears i think im going to install a CAI and cat back
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post #10 of Old 02-25-2007, 10:36 PM Thread Starter
chevyjeep
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I am running a 2 dr automatic with 4.10, 32inch tires and mostly highway driveing.
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post #11 of Old 02-26-2007, 07:28 AM
4-cubed
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Calculated 16.84 last night on fill up.
Manual Transmission and 3.21 gears.
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post #12 of Old 02-26-2007, 08:01 AM
redrom01
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I'm anywhere between 15.6 and 18.7. 15.6 for the normal day to day stuff (I only live a mile away from my office) and 18.7 when I'm taking long trips on the highway. So far the computer has been pretty accurate or as close as I would expect it to be.

-Jeep History-
1992 XJ - '00 till '04 - RIP (thanks alot dave)
1995 XJ - '03 till '07 - Sold to the HUB

______o00o
/__l_l_,\____\,__
l_---l_l__l----[ ]llllll[ ]
._(o)_)__(o)_)--o-)_)__

-Current Jeep-
2007 JK Rubi (Steel Blue)
Searching for an MJ

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post #13 of Old 02-26-2007, 10:27 AM
bamrneck
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6 speed, lots of rural and highway driving. Computer says 23.5 to 25. Manual check shows computer off. Getting right at 20. My GM's are right on the money. I've been wondering about this...................
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post #14 of Old 02-26-2007, 01:08 PM
luckyjeeper
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When mine had the stock tires, my computer was 2mpg off as well. (when it read 21.5mpg, I calculated 19.5mpg)

With the 33's and the computer not yet recalib. for them, it's reading 18.8mpg and I calc. at last fillup 17.6mpg.

Not reallly any rhyme or reason to those numbers, so I'll be interested to see what happens when I take her in on the 10th.

BTW, 6spd, mix of hiway and intown, no hotrodding, even clutching/shifting, no evasive manuevers or transmission braking.

patrick
2007 JK X 2dr. 6spd.
Steel Blue Hardtop
Virescit Vulnere Virtus
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post #15 of Old 02-26-2007, 04:06 PM
jeremy2027
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Quote:
Originally Posted by jeremy2027
m computer says i only get 14mpg im going to fill up today and get some actual numbers if im only getting 14mpg it may be time for an intake and exhaust to try and boost those numbers
I got only 13.5 miles real world hmm
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