A poll for 600 owners

[Matt400]

I would like to see if TSB 18-007-04 has any relationship to the mpg issue many complain about.



Please vote only if you know for sure that you had TSB 18-007-04 done.

Also vote only if you know for sure that it has not been done.



The reason is the poll won't be accurate if owners post mpg claims and are unsure if their truck was flashed with TSB 18-007-04



For those that know for sure that you had TSB 18-007-04 done,

I set the poll up so you can check off your before TSB mpg's and after TSB mpg's too!



Just round off to your nearest mpg, average preferred.

 

[JWerkheiser]

I just had it done recently (13K miles), made no difference in mileage.

 

[jwilliams3]

Matt,

I haven't had the reflash.

But, I couldn't really give you a fair answer anyways.

I drive with the foot in it! TST on level 4x4 and EZ on 3.



I did get over 19mpg on one tank when the truck was stock.

Mostly interstate driving, and it was under 5k miles on the odometer.



--Justin

 

[klenger]

I saw no change with the TSB. I'm getting 17+ most of the time. Not complaining.

 

[Wayne M.]

My production date is 05/04 and I don't know of any flash, and it has never been back since it was delivered. I am unsure if it was done before I took delivery. Is this possible? would I know about it? is it something I would have to carry out? I am hovering right @ 18 +/-. 5 MPG. I am hesitant to vote because I am unsure if it was flashed prior to delivery.

 

[electraglide01]

I have finally gotten up to about 15. 9 MPG. I had the flash done months ago, and really thought something great happened. For about 3 days my computer showed much higher mileage than normal, then tapered down to where it had been running. I tried unhooking the battery daily for a while, but didn't think that it did any good.



I always hand calc'd, but had a wide variance in mileage. About 3 months ago I started filling to the top and the results are much more reasonable (faster I drive, lower the mileage).



I have talked to the owner of the local dealer. One thought that I had was that the reflash might have reset some "long term fuel bias" and would like to go in and reflash the stupid computer daily for a week or so in order to run a tank of fuel and see what happens. There is a new service manager that I talked to yesterday and he said that he has seen computers "revert back" after a reflash, but I don't know about that (sounds like BS to me). Most likely there is something that is biasing the fuel flow. I'd sure like to find a programer that would allow me to modify the fuel curves like I have seen on a Harley. I'd take that 3d injection event to zero flow or move it up to not come in until about 2600 RPM.



I mentioned in a earlier post that the dealer had said something about the computer changing the fuel curves at 5K, 10K, and 15k. I had the flash done at about 8K miles. As I mentioned, it didn't seem to do much good after a couple of days. I saw the biggest mileage improvement by far as I passed 15K miles. Jumped up a couple of MPGs.



From my readings, the LB 4x4 Autos seem to getting the worse mileage, 4x2 6-speed, 3. 73's getting the best. I'd suggest that anyone that votes in the poll ought to post their truck configuration, mods, and mileage. A coworker in Houston has an almost identical truck to mine, except SB. He claims he's getting 18. 5.



My truck - 4x4 electronic, LWB, Auto, 3. 73, stock 265 tires, TSB performed at 8K miles. No mods (yet). Normal driving is 70-75 MPH, some at 80+ unloaded. Occassionally pull a 18' 4 horse stock trailer. Mileage is 14 to 15. 9 MPG depending on way I drive. About 19K total miles on the truck now. Using Mopar oil, plan on changing to synthethic after 20K or so.



4x4/4x2 : 4x4

If 4x4, Manual or Electronic: Electronic

Bed: LWB

Dually: No

Axle Ratio: 3. 73

Tires: 265R70 Stock Mich

Tire Pressure: 80 Psi

TSB 18-007-04 Performed: Yes

Mileage improved noted: Maybe, couple of days.

Mileage when TSB Performed: 8K

Mods: None yet

Driving habits: 70-75, 80+ occasionally

Acceleration Habits: Moderate

Truck loading: Unloaded 90%, 4 horse trailer 10%

Kind of Driving: Mostly Highway, some stop/go city

Mileage now: Low 14 MPG, Highest 15. 9 MPG

Hand Calc or Computer: Hand Calc

Top off tank: Yes

Total miles on truck: 19K

Oil: Mopar, planning on Syn later.

Boost/EGT Gauges: No

Boost/EGT at idle (no A/c):

Boost/EGT at 70 mph (flat road, no load):

Max Boost/EGT seen (please give conditions):



If ya'll can think of other stuff to add, let me know. Would be real interesting to get this into one place.



I hate to commit to anything, but if folks will provide the info above, I will put it into an excel spreadsheet and post it. Then it might be a little easier to sort the info.



Last but not least, everybody should call Dodge and complain about the fuel mileage if you are not happy about it. They have messed with the fueling and added a cat in order to not have to make a CA version of the truck. News Flash: Most of us don't live in CA and don't like burning more fuel to lower the NOx coming out of the truck. The more folks that call, the more likely Dodge is going to do something about it.



Man that got way too long. Took 2 1/2 beers to 2 finger type it.....

 

[Firemedic 76]

I had my truck re flashed today. I wasnt able to dirve any length but one thing i did notice right off the bat was the power increase. Normally the truck would gain power 3/4 of the way into an intersection from a dead stop. As i left the parking lot of the dealership and had to accelerate more than normal onto the highway,iIwas shocked that it was able to get out of its own way. Its about time!

I will be making my weekly trip to Vegas this weekend and will post milage differences. All i need now is the vibration problem corrected.

Kudos to all on TDR ! It has been very informative and gave me ammunition when approaching the dealership,not too mention personal knowledge re: my investment.

Thanks Again