i pulled my boat to ceder creek yesterday and was running 75-80 all the way there and still get 16.9 miles a gallon.

rather be cummins than strokin!

Im jealous. My duramax gets around 15 with the boat if i go 65. But that is its sweet spot. I might try a programer and see if that helps me.
I wish i could find a good 92-93 cummins at a good price. I would keep the fancy GMC at the house most of the time then.

I checked my fuel mileage last week during the cold and I got 24.3 mpg on my 04 3/4 ton 4x4 with 181,000 miles. Did it the correct way, not by the display. I guess it is just now getting broke in.

i changed my fuel filter in the truck that had about 20k on it. i have never done it before so i could only guess what it is going to get now. but i love it.

i also changed the air pressure in the tires the door says that it shoudl have 60 in the front and 40 in the rear.

i bumped the pressure up to 50 in the rear and you would could tell the difreance in the ride it is amazing what air pressure can do for pulling.

Are you running the winter blend air now?

I've had 4 Cummins' now and just switched over to Duramax. I've owned the old rotary pump engine, 12v, 24v, and common rail. The common rail engine was the best "stock" pulling engine I owned, the 12v had the pump turned up and was a running/pulling son of a gun!

I didn't care for the 24v, sluggish and weak, but I had the 5spd and not the 6spd. The '93 model with the rotary pump was a hoss also, just a rough old truck

I decided to go with a Duramax this time because I'm scared of the 6.7's.

i think that everyone is scared of the 6.7 they are good motors but they do not have all the bugs worked out yet and that is why i have one when i heard that they were going to switch the motors and give them converters i did not want anything to do with it.

just to let you know that the 5 speed was not the high output and it was made to pass the california emmissions is what i was told from a guy that was a member of the diesel forum.

I talked to a guy Saturday that has an 08 with the 6.7. When he pulled in next to me, I noticed how quiet it was. He said the power is there but the best fuel mileage he was getting was about 14 on the highway.

The 6.7's defintaly have the power, and the have the exahust brake installed from the factory, which is a really cool deal, but the problem is in the regen issues they have been having. Its not a big deal while the truck is under warranty, but when I buy a truck I try to hang onto it for a while and I don't want some headache way down the road.

only problem i have, is mine eats tires like I eat Oreos!

Ok Ill chime in a little....Whatcha mean eats tires? what does the engine have to do with tires? Reason i ask is cuz my two fronts are really wearing fast...I was thinking it was the alignment???
Ive got an 2007, 6.7 manual 6 speed....power is not an issue. I can pull my 28 foot striper boat down the hwy at 70++ and still excelerate.
I am also pretty satisfied with the gas mileage so far.. now keep in mind this is using the computer readout on the console so im not sure how accurate those are....But on the hwy not towing doing tween 65-70 I can easily get a reading of 21-22 mpg. City driving goes down to about 18 and towing the boat stays tween 17-18 mpg

poorboy.. what are regen issues ? after I know what they are ill tell ya if Im having them

JD how often have you rotated the tires on your truck,the tires will wear out faster due to the weight of the engine on the diesels,thats why i ask how often you rotate.

means the truck is so heavy that the tires are wearing out in half the warranty time. I attribute it to the heaviness of the truck itself. Not an alignment issue on mine. maybe I shouldnt cheap-out when I buy my next set of tires

jd it has a third cumbustion event that takes place in the exhaust system if left ideling for long periods it will plug it up with soot.tires wearing may be from weak springs the cummings motors are heavy ! both of my trucks ate the inside of the tires , the one i traded in only had 484,000 miles half of that was with 14-24,000 lbs behind it 12 valve! but beside tires fuel was the only thing i EVER had to replace!(except seats from my butt draging across them)luckily my current truck has the proven 5.9

p.s dont believe your over head ,i am double chiped mine reads 28-30 don't i wish , no trailer 21 hand calculated !not bad for 3500 4x4 dually.

I only have 14K miles on the truck and the fronts are wearing on the outside. mine is a 3500 2wd but I put a 2.5 inch levling kit on the front end and think it may be an alignment. I had the tires rotated at 7500 miles and due again now. This is my first diesel I've ever owned so im a real rookie when it comes to diesel knowledge

Anytime you add a lift kit it is always good to realign the frt end.Because it changes the alignment dimensions when you lift them.so yes it probably is an alignment issue.

All of the new diesels, starting in the 2nd half of 2007, fall under the new emmission requirments set by uncle sam. in a nutshell, the exahust passes through a Diesel Particulate Filter(DPF). After X amount of miles and gallons of fuel burned, an actual flame is ignited in the exahust system and burns off the particulate matter in the DPF, a regen (particulate is basically the black soot in diesel smoke)

Now if for somereason the truck fails to regen, the DPF will become completely clogged and after its all said and done, the truck won't run and you'll wind up getting a ride to the dealer with the help of a wrecker.

The DPF's are industry wide as far as "on highway" diesel engines are concerned. Light, medium, and heavy duty trucks.

from what I've read and herd, the Dodges are having the most problem, and GM is having the least amount of regen issues.

I am in the heavy truck indusrty. What used to be the most sought after engine in my industry, Caterpiller is going to quit building truck engines in 2010 because of the issuse they are having, and the new, stricter standareds the government is enforcing in 2010....

Thank goodness I don't have a need for a diesel truck, what an ongoing maintenance nightmare, and only gonna get more interesting after 2010.

I feel for you fellas that rely on 'em for a living!

damn glad I dont have emmissions on mine I would be in big trouble! 4" pipe runs from the header to the bumper LOL!! forget the cat or muffler! who needs em!!

what year model is your Ronnie?

hate to be the bearer of bad news ronnie but i THINK if it came from the factory with the cat you will need it for inspection as well as muff.

nope, not mine. exempt from emmisions. its a 2001.

Not a cat on our 2nd generation. We have mufflers and resonators. The resonators only job is to eliminate noise or harmonics.

Poorboy, the new trucks have the capacity to remove the DPF and unless they institute new guidelines they do not inspect for them in Texas.
The regeneration of a Cummins happens when a sensor tells the computer that there is an X amount of restriction in the exhaust system. This is the DPF loading up with soot and so there will be a very small amount of diesel injected into the DPF just after the turbocharger that ignites and burns off the soot.

Right now mine (2000) and Ronnies just get the 12.50 inspection. Kick the tires and look at the lights.

I do like the Chevies.

Yes, they build DPF Delete Kits that you can run, and would probably be alright, but it is illegal. If you were ever caught you'd have to pay a fine, but its highly unlikely you'd ever get caught. The only thing I am worried about with running a DPF delete kit on mine is voiding the waranty. Some dealerships care and some don't, just depends on your relationship with the dealership. I need my warranty, I'm skeerd

I didn't know if there was a sensor on the 6.7's or not, my LMM ecm reads milage and fuel used and will regen. I belive it regens between 325 and 450 miles. I'm not sure on the 6.7's, but it takes 3 gallons of fuel to regen an LMM

Ronnie, I was just wandering if you were running a 12v or 24v....if it was a 12v we could do some "fine tuning" on the fuel pump real cheap like...

that word "fuel pump" scares me... i dont even look at it wrong... I stay away from that little jewel.. dont want to have to replace it anytime soon..

the transfer pump that you are worried about and the injestion pump I'm talking about are two totally differnt animals....but yours it too new...

2007 5.9 3/4 ton 4 dr 4x4, 5" straight pipe from turbo back, 6" tip, smarty chip, s&b cold air intake,silencer ring and baffles removed, 2" leveling kit, 35" bfg mt km2's on 17" moto metal wheels...23-24 mpg on hwy and 19-20 pulling 21' boat

And Shayne Ward could Blow My Doors Off With His Duramax!!

state troopers are now pulling diesel trucks over for excessive noise. there looking for factory mufflers and resinators. cost me a big fine if i put a state sticker on, so now we have to reject state inspections for missing exhaust componets. this is texas state law..

I have a 2004 model two wheel drive. It pulls hard and I am pleased with the gas mileage. What I don't like is that the truck came with a tow package but does NOT have a limited slip differential or anti-spin as Dodge calls it. This has caused problems at the ramp. I checked into getting a locker rear and I can't find anyone that makes one for the 11.5 rear end. All that power going to just one wheel is nuts.

893 hp on fuel only

I know of DPF deletes that are 100% untraceable by ford or chevy. PM for some details

this is an american rear axle from the factory. this is a different type of anti-spin. you have to apply emergency brake slightly to engage full lock. if one wheel starts to spin the diff stays open not locked up. look in your oweners manual in the gloove box for further information...

I have 99 2500 4X4 i have installed a Edge box, FASS fuel pump ATS converter, Mean green intake kit, and 4 inch exhaust. This truck has been way expensive but I would not own anything else.

I also have a "99, 4X4. I have the FASS HPFP, Smarty and 100 HP injectors and average 19/20 MPG. Original VP lasted 200K miles and the stock clutch (5spd) was replaced at 218K miles with a new South Bend. With the Ultra Low Sulpher Diesel we have now, I do add 16 oz of two cycle oil at fill up to give the VP the lubrication it needs. I don't tow a lot any more, but have towed a 26' TT and horse trailer for many miles. It now has 225K miles and I would drive it anywhere.

A good info source for Dodge/Cummins is: http://www.dieseltruckresource.com/dev/index.php

www.cumminsforum.com
another great site to waste the day with lol

The 6.7 runs great I have never had trouble with them. Pulling heavy loads that motor will get it stock and I drive a lot of miles.

I love my 02 5.9 6spd. I haul and tow up here in Alaska. I love the dual wheels for stability while hauling, but hate them on the snow.

Doug

You run Hot Shot?

They say if you work them to death you will not have any problem with the regen system. I have a buddy hot shotting that hasn't had a lick of trouble out of his...

the6.7 was designed for hard working people it does not like concrete driveways. thats why hotshot drivers with common sense love it..

Driving to fishing tournaments... 12k load

That's funny. A state trooper lives next to my gf...We drive almost identical trucks...his is louder than mine..and I'm running a straight from the turbo. I know he's got his straight piped too, I think he's 6" and mines 5".

as your aware of there are people above the law. how many times do you hear when law people get speeding tickets or get out of drinking while driving. i know my cousin is a retired state trooper and you should hear the stories about above the law.

since when?

since febuary 2009 poorboy. just trying to help...

do you sticker commerical vehicles?

Hard to stop at that speed.

I wish I could post a pick on here from my cell phone. I took a picture of a cummins dually pulling a freightliner with a huge sleeper on a trailer... I am not a dodge man, but I was impressed

If someone knows how to post from a cell, pm me a cell number and i will send the pic

no more state inspections. just moved my tools to another dodge dealer today.

I dunno, I met a guy a week ago who has a new cummins and said if the dealer has to take his truck back one more time, it's going back under the lemon law. Something about not running right on the new low sulphur fuel????

how new is new? The 2007.5's and up were designed to run on ULSD (15ppm). I bet he is having problems with the DPF clogging up and the truck not re-genning. Does he run it hard and leave the exahust brake on at all times (givin its a 6.7l), or does he baby it around and let the truck idle all day?

i have the good motor the 5.9 it is not the newest but the best.

i have not heard too many positive things out of these newer motors

stock '05 Cummins not sure which one(5.9 I think) but i drove from Garland to South Padre on one tank of fuel and still had some left. Thought that was pretty good. I believe it was around 670-680 miles outta one fill-up. Granted that was at the time diesel was around 4 bucks.

I towed my 20' bass boat from Tyler to Shreveport at 90-95mph most of the way (still had pedal left) and got 11-12 mpg on that tank. The truck was stock.

Now I think about how dumb that was since it was only a single axle trailer.

that fast you throw you mileage out the window

Have a 5.9 six speed, with the bully dog programmer I get between 19-22 on the highway. Plus I took it to the drag strip and ran a 14.60 at 100mph, and that is leaving in 3rd gear!

Pulls my race car and boat like nothing I have ever owned before.

it will do it i gartee nothing pulls like a cummins

id like to see the dyno sheet on that.....what all have you done to it??

heavy motors eat tires i have a 99 dodge 24v 4x4 5 spd have a 6 in lift on 35in tire with electric fans a couple of programmers stacked a 44 mm turbo and i get 23 mpg pulls my 20ft stratos 80 gotta love diesel

the weight of the deisel and the shotty suspension Dodge uses is the problem . I swithced to a HIGHER grade shock it helped but didnt fix it. The next sugegestion i got was to rotate rotate rotate! good luck

Love my Dodge 5.9L




And it hauls like there is nothing on the back.

I have an 05 ram 2500 with the 5.9L and automatic transmission. I've been searching the Internet on if this transmission is good or not but haven't found much info. I read the standard transmission is good but does anyone know about the automatic?

Rockcrawler from a fellow cummins owner a love your truck, it reminds me of a srt-10 cummins, i can respect the amount of time and money in your truck for i have built my, own awesome job sir....

I got an 06 dodge cummin. Love it. Beginning of year i did some mods to it.

billet auto tranny
66mm over 480 twin turbo
studs
springs
dual cp3s
150hp injectors
airdog fuel pump
crazy larry bullydog tune
arc flow intake manifold.

Truck was nasty. Was real diasppointed in the numbers though. Only put down 725 on a crappy dyno. Never got turbos to lite. Smoke never cleared either. Truck on a good dyno was around 800hp or so. On street once i got the turbos lite i would spin to over 90 before gaining traction. Never made it to track. We figured low 11s out of it. Also pulling boat at 100 was no problem either.

Ended up putting back to stock and buying 22s for it. Too fast for me. 11mpg all the time sucked too. But it was fun!! Any of u guys need parts or help on truck aftermarket wise let me know. Always down to work. I did all work myself on mine. And also my buddies