guys/gals who "flashed" or "reset" ecu - Page 3

**HudsonValleyTitan** · 02-11-2005, 03:03 PM

Quote:

Originally Posted by Squid

Yes one tank won't do it. And it's not going to be an exact science. I always stand by the truck and listen to the sound as I'm filling. As the sound changes I decrease the flow rate until it shuts off and I do this every time. (hate to spill gas down the side of the truck.)(Hurts the gas mileage)

I know everyone has heard this already but with a 60/40 split of Highway/city driving I'm getting a consistant 17 mpg or more. This tells me that if I did a straight highway run my truck would get well over 18 mpg on the highway.(70 MPH)

So do you also think there's more going on here? I mean...how can it be possible, other than incorrect mileage figuring, that people are sometimes getting 5 to 10 MPG differences? I personally don't buy it. 1 or 2 MPG differences maybe. But people are swearing they're driving slow and not gunning it and getting 9 MPG! Can't be. These engines and trannys are smooth as silk, run perfectly and are powerful. Nobody here claiming such awful mileage is complaining their trucks are running like crap...which is what would have to happen to get 9 MPG around town without towing. I still have to blame either mathmatics or technique.

titandoc · 02-11-2005, 05:07 PM

Hudsonvaleytitan, I can see where the skepticism may come from. I cannot explain why I get such poor mileage, but I am not the only one. I cant figure it out because my truck runs smooth otherwise. It's not fuzzy math either. The calculations will give the same result no watter what side of the hemisphere you're on. It has become my habit to calculate the gas mileage with every fill. Divide mileage by gallons consumed, top the tank off the same way every time, and reset the odometer with every fill. It's very simple.
I have a feeling it has to do with a software glitch in the ECU.
gtbgup01 had a pretty good result.

Quote:

Don't complain because I was getting a consistent 9mpg with my LE CC 4X4. I just had the dealer re-flashed my computer about 2 wks ago., and have recently completed two long distance trips which yielded 15.5 MPG highway, and 12.5 stop and go to include my 1.5 mile to work 7 days a week. Trust me I was really close to trading it in, and kinda still considering doing it. I only use 87. During my test after reflashing I filled up once with premium just for the fun of it, and I had the money to waste then (taxes.

I am hopefull when I get the ecu reflashed things will change.

NorCal 4x4 · 02-11-2005, 05:24 PM

Quote:

Originally Posted by gtbigup01

Don't complain because I was getting a consistent 9mpg with my LE CC 4X4. I just had the dealer re-flashed my computer about 2 wks ago., and have recently completed two long distance trips which yielded 15.5 MPG highway, and 12.5 stop and go to include my 1.5 mile to work 7 days a week. Trust me I was really close to trading it in, and kinda still considering doing it. I only use 87. During my test after reflashing I filled up once with premium just for the fun of it, and I had the money to waste then (taxes

).

It looks like a re-program of the ECU worked for gtbigup01's Titan. From 9 to 12 1/2 MPG in stop n go! That's a 3.5 MPG increase!

Sounds like the computer has some of the trucks running rich, (like at startup), but doesn't switch out of this mode.

"It's a truck what do you expect?"

"My truck gets 15 MPG so you must be wrong!"

*Squid* · 02-11-2005, 09:17 PM

Yes and how many people with crap mileage have now, or will in the near future be visited by the Judder Monster?(Just another of my wacky theorys.)

All I know is that if your a mature individual and are driving this truck like a truck, rather than a Nascar Truck 12 MPG isn't right. ECU, Dragging Brakes, something is wrong.At over a hundred miles a night 6 nights a week at 12MPG I'd be selling my truck also.I couldn't afford to own it. Even the two full tanks I ran in 4Hi yielded
13MPG.

Now I know for a fact that at 70 MPH I'm pulling 1600 RPM's and I've been told that Big Tow and Offroad are pulling 2000 Rpm's.So at 75 or 80 MPH that would really suck some gas compared to my truck.

Like the Brakes this is a very strange indeed.

Ghostface · 02-11-2005, 10:27 PM

Sorry to add no worthwhile input to this tread but every time I see this tread all I see is Gals who Flashed.....and get all excited for nothing.

NorCal 4x4 · 02-11-2005, 10:30 PM

Hey Squid,

So it seems that you are one of those that thinks those that are getting 9-12 MPG are not being conservative in their driving style, and that they are also the ones getting brake judder.

Well I'm sure that is the case for some, but there are many of us that get poor mileage and have had brake judder, and drive conservatively. Go to some of the brake judder threads and you will see "mature people" including at least one moderator that has had this issue.

It is in our nature to project our own experiences onto others. So if we don't have judder and get great mileage, then it can't be the Titan, (since ours is perfect), instead it must be the damn kid that is Hot-Rodding the truck around town.

Bottom line there are mature drivers, (not necessarily mature individuals, such as myself

) that have these issues with their Titans.

Due to a heavy population of CHP of late, I have been driving 55 mph to 60 mph (1500-1700 RPM) and my mileage is 14 mpg avg. Hwy. This is EPA city. not Hwy! I've only gotten 15 mpg twice in 10,000 miles. I would think that a 16 or 17 mpg tank should at least be obtainable.

So, as I stated in my previous post, if the ECU re-flash improved gtbigup01's gas mileage by 3.5 mpg, it's pretty clear this is an issue with some of these low mpg Titans.

Lycanfire · 02-11-2005, 11:02 PM

I have a 2004 4X4 with big tow and offroad. I live in Florida were it is about as flat as it can get. I average 14 - 14.5 around town and have seen 17 on the interstate. Even though I am not running up and down hills or mountains, I do spend a lot of time at stop lights burning fuel and not going anywhere. I notice a difference in mpg when I drive 65 or 70 rather then 80 or 85 on the interstate. My mileage also goes down depending on how I drive it around town. With traffic lights at just about every intersection and the elderly down here taking a mile to get up to the speed limit might be why my mileage is so good.

Stingray · 02-11-2005, 11:31 PM

Quote:

Originally Posted by titandoc

Sounds like reflashing the ECU worked pretty well for you. I am glad to hear that. I've been getting ~9 mpg combined, and that's driving very easily. I think its one of the worse around!

If I reflash the ECU and get 12-15 I'll be jumpin' round in circles!!!
I'll be making an appt at the Nissan dealer on my next day off.
Wish me luck.

like squid I get 17mpg on the highway,less in the city. something has to explain the differences, resetting the ecm parameters could be it.

gtbigup01 · 02-12-2005, 01:08 AM

Quote:

Originally Posted by Squid

Yes and how many people with crap mileage have now, or will in the near future be visited by the Judder Monster?(Just another of my wacky theorys.)

All I know is that if your a mature individual and are driving this truck like a truck, rather than a Nascar Truck 12 MPG isn't right. ECU, Dragging Brakes, something is wrong.At over a hundred miles a night 6 nights a week at 12MPG I'd be selling my truck also.I couldn't afford to own it. Even the two full tanks I ran in 4Hi yielded
13MPG.

Now I know for a fact that at 70 MPH I'm pulling 1600 RPM's and I've been told that Big Tow and Offroad are pulling 2000 Rpm's.So at 75 or 80 MPH that would really suck some gas compared to my truck.

Like the Brakes this is a very strange indeed.

Yes it's really easy to sit on the other side and make an assessment isn't it? Well I was there too and never called BS on those that claimed to get 15/16 or even 17MPG. What I did as a mature individual is realised that something was definitely wrong with my truck, and took advice from previous treads and got my comp. re-flashed. As you will also see if you search, not one race story coming from me. So how is it that those that race still get 12/13 MPG? Go figure. Well I go on another long trip on friday to Tampa FL. Can't wait to check a few more tanks.

mhwo · 02-12-2005, 01:43 PM

Besides my Titan, I have 3 other friends that own them. 2 of them and myself consistently get 15-15.5 driving around the city and 16/17 highway (150 mile trip or better).

One guy gets 11 and 12 mpg (he says) no matter what he does. I saw this guy drive the other day and no wonder. He puts the pedal to the floor every time he starts the truck.

I still think that most of the bad mileage is the way some people drive the truck. A few may have legit problems.

My Sergeant just bought a new Dodge 1500. The best he ever gets is 13 and that's when he coasts a lot. So I am grateful that my Titan gets what I believe to be great mileage for the monster it is.

*Squid* · 02-12-2005, 02:18 PM

Quote:

Originally Posted by swarren1

Hey Squid,

So it seems that you are one of those that thinks those that are getting 9-12 MPG are not being conservative in their driving style, and that they are also the ones getting brake judder.

Well I'm sure that is the case for some, but there are many of us that get poor mileage and have had brake judder, and drive conservatively. Go to some of the brake judder threads and you will see "mature people" including at least one moderator that has had this issue.

It is in our nature to project our own experiences onto others. So if we don't have judder and get great mileage, then it can't be the Titan, (since ours is perfect), instead it must be the damn kid that is Hot-Rodding the truck around town.

Bottom line there are mature drivers, (not necessarily mature individuals, such as myself

) that have these issues with their Titans.

Due to a heavy population of CHP of late, I have been driving 55 mph to 60 mph (1500-1700 RPM) and my mileage is 14 mpg avg. Hwy. This is EPA city. not Hwy! I've only gotten 15 mpg twice in 10,000 miles. I would think that a 16 or 17 mpg tank should at least be obtainable.

So, as I stated in my previous post, if the ECU re-flash improved gtbigup01's gas mileage by 3.5 mpg, it's pretty clear this is an issue with some of these low mpg Titans.

Please read my post again (SLOWLY) I was in agreement that there is a problem.

SWARREN1 Wrote "It looks like a re-program of the ECU worked for gtbigup01's Titan. From 9 to 12 1/2 MPG in stop n go! That's a 3.5 MPG increase!
Sounds like the computer has some of the trucks running rich, (like at startup), but doesn't switch out of this mode

Squid wrote "Yes and how many people with crap mileage have now, or will in the near future be visited by the Judder Monster?(Just another of my wacky theorys.)

Squid also wrote "All I know is that if you're a mature individual and are driving this truck like a truck, rather than a Nascar Truck 12 MPG isn't right"

And"ECU, Dragging Brakes, something is wrong."

And"At over a hundred miles a night 6 nights a week at 12MPG I'd be selling my truck also.I couldn't afford to own it"

And " Even the two full tanks I ran in 4Hi yielded
13MPG.

Wow did some of you not get enough sleep last night or are you just spoiling for a fight?

*Squid* · 02-12-2005, 02:26 PM

And whats wrong with wondering about dragging brakes maybe being the culprit of the brake judder and bad gas mileage?

Drag is Drag, and drag produces friction which in turn produces heat so does the people with bad MPG have the brake problem?

Do people with the brake problem suffer bad MPG?

Is it so bad to use your brain to wonder?

37L1 · 02-12-2005, 02:28 PM

Put up yer dukes, put 'em up, put 'em up!!!!!

I am the King of the Forest!!!!

*Squid* · 02-12-2005, 02:37 PM

Quote:

Originally Posted by 37L1

Put up yer dukes, put 'em up, put 'em up!!!!!

I am the King of the Forest!!!!

SHHHHH, be berry berry quiet. Me thinks me sees a super moderater?

NorCal 4x4 · 02-12-2005, 05:11 PM

Hey Squid,

Damn the way you worded it, it does need some "slow" reading.

I took your comment: "Yes and how many people with crap mileage have now, or will in the near future be visited by the Judder Monster?(Just another of my wacky theorys.)"

I took this as you actually placing the blame of the combination of poor gas mileage and worn brakes onto the radical driving styles of immature drivers.

The following led me to believe this as well:
"All I know is that if your a mature individual and are driving this truck like a truck..."

So since I was "looking for a fight", and your comments really can be taken to support either side, I stated:
"So it seems that you are one of those that thinks those that are getting 9-12 MPG are not being conservative in their driving style, and that they are also the ones getting brake judder".

I apologize for saying such a terrible thing.
And it is good to know you are not one of those that think that way.

BTW the was in reference to my earlier post, (immature selection of smilies by me).

So, now knowing your position on this, the points of your post are more clear.

My arguments were only against the position of blaming the owner, instead of blaming the ECU of their particular Titan.