Chip Recomendation for 01 Dodge with 24 Valve Cummins

[Sean Marconette]

I get 19 with mine not towing, that is with it in mileage mode. I have 4.11 gears. I have been told I should get better than that, but I am turning 2100-2200 RPM at 75 MPH. If you get the RPM down to 1900-2000 I have been told that would help.

Sean

[art leong]

I wish someone would make one for the bigger trucks 550. I have a 4.88 rear gear and I'm at 2500 at 60 mph. And can't get any mileage 8 towing 12 or 13 not towing.
If I go real slow 50 mph I get 10 towing. But that's to slow for the interstate, at 60 a lot of prople wave their finger at me as they pass.

[Run to Rund]

Art, if you have a Cummins in your 550, call Mark at TST Products in Indiana. He worked as a Cummins engineer for 33 years and makes power/mileage products for those engines. 812-342-6741.

[art leong]

Originally Posted by Run to Rund

Art, if you have a Cummins in your 550, call Mark at TST Products in Indiana. He worked as a Cummins engineer for 33 years and makes power/mileage products for those engines. 812-342-6741.

My truck has an F in front of the 550 with a 7.3 liter. I made a typo

[magnumv8]

the main thing for mileage is similar to making power....more power, less throttle needed for mileage......make sure you have a CAI (cold air intake) and at least a full 4" mandrel bent exhaust.....I run K & N and Banks stuff.....I pull down around 24 mpg in my 2005 Cummins unloaded w/4.10 gears (2500)....go to the diesel forum sites and you can get unlimited info for darn near anything.....

www.cumminsforum.com

hey Art....there is a LOT you can do with your F550.....just do a general word search for "powerstroke forum" lots of good info there.....also depending on your budget a Gear Vendors overdrive unit will definitely give you a mileage boost and pay for itself pretty quickly.....

same for you Duramax guys......

[Bill Ringer]

Chris,

I have the same motor in my truck. No chip- I took a different approach, installed the Bosch "RV Motorhome" injectors. They are good for 40 HP. At the same time I added a boost fooler so the ecm would not cut the fuel back when the boost goes above the limit (19.5 #?). I picked up more than 10% mileage towing. Now it makes 28-29# of boost. The RV injectors are not expensive. I paid less than $300. I like them because it idles smoother and without the trailer I can let the clutch out in 2nd without touching the accelerator. Mine has the 6 spd. plus a 4" exhaust. With the stock injectors it would stumble. Visually you can see that these injectors have more and smaller holes. With my truck & 40' trailer completely loaded it weighs 20,500# and I could get 10.5 MPG. It even hit 11 once.
I added an Edge EZ recently and had it on the economy setting. It added good power but really did not improve the mileage. Now with fuel over $3 again I am back to just the boost fooler. I also have an EGT installed before the turbo. Those are always a good idea when you modify your truck. It doesn't take too many modifications to push the exhaust temp over 1200 and that is when the damage starts (some say 1300, I'm conservative).
I get my information from the Turbo Diesel Register magazine & website. Check them out. For $35 a year you get the magazine and can post and search their boards and it's well worth it. There is a lot of reliable information there.
Good luck
Bill Ringer

[magnumv8]

one other thing I forgot to mention is fuel additives.....POWER SERVICE makes a diesel fuel additive that increases the cetane rating of the fuel which helps combustion and will give you a fuel mileage increase also....well worth the cost cause it only adds about $2.00 to a fill up....they make 2 versions, they both help lubricate the fuel system with the now required USLD fuels and one also includes an anti-gelling formula......it's available at Walmart, Advance Auto and I am sure many other places.....there are other types but this is the one I have been using in my '05 for more than 100k......


D L Rambo.....