will a fuel and pump tuning ruin my fuel milage ? - Dodge Cummins Diesel Forum
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Old 10-11-2011, 10:01 PM   #1 (permalink)
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Exclamation will a fuel plate and pump tuning ruin my fuel milage ?

Rite now my motor is all stock with the exception of a cold air and a 3" strait pipe and if i dpnt drive it lile a race car i get just over 20 mpg, so if i do a lightly modded fuel plate (not sure what number plate i would even nees) and pump tuning would my city milage go down?
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Old 10-11-2011, 10:16 PM   #2 (permalink)
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umm my milage actually went up a couple miles per gallon. it may be one or two miles but hey any bit helps and u will like the gains. if u can keep ur foot out of it lol. but i also got a 5 speed so idk if that changes anything. the fuel plate is also a good mode. id just move my stock plate forward. but idk if i would move it fully forward. depends on how your trans is doin and what u will be doin with it
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Old 10-11-2011, 10:22 PM   #3 (permalink)
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Well ive read that removing and or moving the stock plate forward it will increase my egts and with a loaded trailer i can stannd on ot comming off of an onramp or going up a hill i moght hit 950 deg on the pyro so i dont wanna kill my egts it why im considering a plate rather than moving the stock one
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Old 10-11-2011, 10:37 PM   #4 (permalink)
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1,200-1,300 EGT's for a few seconds wont hurt it.
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Old 10-11-2011, 10:44 PM   #5 (permalink)
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you can hold 1250* (pre turbo) all day long, you can go higher for a short amount of time without worry, but the higher you go the shorter you can hold it there!
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Old 10-11-2011, 10:45 PM   #6 (permalink)
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According to cummins, 1250 degrees (pre turbo) for 50 billion years won't hurt it. That's the max safe continuous temp.
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Old 10-11-2011, 10:47 PM   #7 (permalink)
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Yeah i know if its for a short time it will be fine but why risk my exha temperature going up when a new plate with new bolts and a boost fitting is under $30 on e bay
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Old 10-11-2011, 10:48 PM   #8 (permalink)
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Run a pre-post EGT gauge....like me haha. Truck is like a spaceship...lots of gauges, Its awesome.
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Old 10-11-2011, 10:49 PM   #9 (permalink)
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To v8440 thats very good to know what cummins opinion is, thanks
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Old 10-12-2011, 06:15 AM   #10 (permalink)
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A #10 plate is towing friendly, moving the stock plate as you mentioned is not. It will take some moving it around to get it where you want it to keep EGT's in check. I personally try to keep my temps below 1200* and for a long pull up a hill I even try for 1150*. A five mile pull up a hill is enough to do damage if temps go too high. I know gauge manufacturers tell you their gauges are extremely accurate, but if it is off just 50* to 75*, that's enough to make a huge difference in five miles. Another key to EGT's is to bump the timing up to 15.5 or so degrees.
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Old 10-12-2011, 08:42 AM   #11 (permalink)
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So you are saying that even if I buy a numbered plate I still have to play around with it and adjust it do find the so called sweet spot ? It not just a bolt in mod?
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Old 10-12-2011, 08:50 AM   #12 (permalink)
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With a #10 plate you may could go full forward and be ok. Before buying the plate, take care of trans.
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