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Discussion Starter · #1 ·
just purchased my 02 7.3 crew cab this week pretty excited. i ordered a ts 6 pos chip (stock, hi idle, 50, 75, 100, 140hp) lookin for more power and mpg...if driving regular will my mpg go up? if so which setting is saefest/most economical? new to diesels anything helps...getting 11.6 mpg driving in town
 

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In the passing lane
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from what I have learned the higher the setting the better MPG I have gotten on mine:shrug:
 

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Discussion Starter · #3 ·
well im a little nervous about runnin it on the 140 setting all the time...but my buddy just got a truck identical to mine except 2wd and it gets 16 around town...it has only 78k though...just tryin to make sense of it as mpg with this truck has been the only disappointment so far...
 

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TDG Mafia #76
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Generally the 100 or 140 settings will give the best mileage; keep in mind that when you're running these settings for said mileage, you've got a lot more power on tap, so you can also kill your mileage at the same time...2x4 under the go pedal makes a difference, so my friends say...
 

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"Lady in Red&
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the 75hp setting is the best for daily driving & fuel savings
 

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TURBO BOOST
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mpg

i got a 6 pos chip from ts with the same settings you got and my mpg stayed the same,i run it mostly on 75 hp
 

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strokin now cummin later!
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75hp setting for sure. ive tried them all out. i was getting 22.5mpg before the ulsd fuel.
 

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Discussion Starter · #8 ·
before the what now? im new to all this but i would do anything for that kind of mileage
 

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TDG Rocks!
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the reason the 2wd gets better milage is cuz it has about half the resistance against the motor ( ie t-case front axle) plus areodynamics. way closer to the groung. I know cuz my dads 250 is a 2wd. and he get better than 20. But I did in my obs but that was with the stock 235/75R16 tires now with 265/75R16 A/T's it's closer to 17. but i drive 100 mi to and from work on I15 at 80mph.
 

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I have an obs and get about 17-18 in a 4wd with 315s on it if I baby it. That only happens on 75 horse tune though.
 
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