5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

Best mods for mpg

Old May 24, 2012 | 10:39 PM
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Default Best mods for mpg

New owner of 97 Dodge 5spd 2wd. Any suggestions to get the best mpg's possible. 1st, I will remove the heavy utility box for a standard box again. Gears are unknown at this time. I think 4.10s. Needs tires so I was thinking some nice tall pizza cutters might help. This thing was my finall paycheck from a previous employer. Funds will be a little tight for awhile, but I would really like to make a nice daily driver out of it.
 
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Old May 24, 2012 | 10:54 PM
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AIR AIR AIR! Get that stock box outta there, go down to your local autozone, pick up a $20 aftermarket air cleaner, 3 & 4 inch compatible I think it is, and stick it in the end of you stock air cleaner hose. Wam Bam awesome turbo whistle and 3 MPG. Next is exhaust..
 
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Old May 24, 2012 | 11:25 PM
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It's ready for a service anyway so this will be a good time for the new air filter. How mush more fuel can I add before my economy goes to hell? I have been looking at the #11 power kit from TST products. My theory is to increase power, lower engine RPM's by being able to drive in a higher gear at lower speeds. A rear end gear swap will most likely be in my future.
 
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Old May 24, 2012 | 11:48 PM
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Yes, if speed at lower RPM's is your goal, a rear swap is the only way to go. I can give you a list of cheap power-grades, but as long as you drive it like a man, you aint gonna get **** for eco.

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And are you planning to be towing heavy?

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And are you planning to be towing heavy?
 

Last edited by Cordova2013-12 Valve; May 24, 2012 at 11:48 PM. Reason: Automerged Doublepost
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Old May 24, 2012 | 11:50 PM
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A light right foot

Sent from my DROID X2 using Tapatalk 2
 
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Old May 24, 2012 | 11:56 PM
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For the most part this will be just a commuter. Occasionally the boat will get drug along. I have grown up enough now that I don't need to blow smoke but running over the occasional rice burner is just plain fun.
 
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Old May 26, 2012 | 04:24 PM
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Then definitely get a different rear-end. I forget what stock ratio is though
 
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Old May 26, 2012 | 06:26 PM
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Had the truck up on the hoist today. 3.54 gears. I thnk that I will leave them in for now and see how I end up using the truck. Wanted to do some of the free mods on pump but ended up chasing electrical problems instead. The truck has been sitting for 3 years after the shop mechanic said that the injector pump was bad. It really pissed him off when I opened the hood, flipped the fuel shut off up and drove it home.
 
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Old May 26, 2012 | 08:54 PM
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LMFAO, that's great man, you have no idea how hard I just laughed. But anyway, I found a good list of free mods. But most of them eat fuel, but produce big power. Are you pretty schooled in the AFC?

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Here's the link anyway. I found it very helpful, maybe you and others will too
12 Valve AFC Mod's - New England Turbo Diesel Power
 

Last edited by Cordova2013-12 Valve; May 26, 2012 at 08:54 PM. Reason: Automerged Doublepost
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Old May 26, 2012 | 11:39 PM
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My aneroid experience is on a JD 6030 tractor that had a p pump. I understand the basics of how it works but have a lot to learn. I am trying to find info here but there is just so much to sort through.

Thanks for the link. VERY GOOD STUFF!!!!
 

Last edited by Deeres&Dodges; May 26, 2012 at 11:42 PM.
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