cummins 4x4 11mpg ?? how can i get 20
i have a 99 reg cab lwb 4x4 cummins 4 in lift 35 in mts on it and went on a trip today mostly highway miles and averaged out at 11 mpg mods to my truck include
4in exhaust turbo back(straight pipe) edge juice with additude programmer (i had the programmer on the mileage setting) not sure if injectors have ever been replaced i put a lift pump on a month ago it runs at 15psi idle and round 12psi going down the highway changed the fuel filter when i put the lp on factory air box any ideas on what could be the problem?? |
what speed were you running down the road?
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I was running between 65 an 70 right at 2 grand on the rpms
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for some reason i get better fuel mileage between 70-75 then i do between 65-70. not a heck of a lot maybe a mile or two. whats your air cleaner look like? i was having an issue with mileage a month or two ago after driving a lot in the desert when it was dusty. it dropped down to around 15 from 20-21. I did a full filter service and it shot my mileage back up (air,oil,fuel). i noticed that if I am getting closer to 5000 on an oil change i loose about 1 mpg highway too. try hosing out your intercooler/radiator. idk where your from but a lot of debris in there can limit the effectiveness of your intercooler too. might sound weird but it works in my truck.:tu:
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i get my best fuel mileage with the juice set on level 5. most of the guys around here do to i believe.. try that and see how it works for ya.. also i have my settings all on 5 too
1x5 2x5 3x5 4x5 5x5 |
Really 5 with the fuel up ? I'm been debating on going to a bhaf
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Originally Posted by redneck31794
(Post 1025598)
Really 5 with the fuel up ? I'm been debating on going to a bhaf
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Could u tell a mpg diff in it ?
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Originally Posted by redneck31794
(Post 1025604)
Could u tell a mpg diff in it ?
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I plan on doing the bhaf and cleaning the map and iat sensors in the next few days the truck has a new lp or I would upgrade to the air dog system
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