Is it possible to improve fuel mileage? - Diesel Forum

Calpyro · 03-31-2008, 10:21 PM

Has anybody done a before and after mileage calc using a DP Tuner?

**SeeYa** · 04-01-2008, 12:11 PM

Quote:

Originally Posted by Calpyro

Has anybody done a before and after mileage calc using a DP Tuner?

Hi Calpryro,

Many of our customers have recieved fuel mileage increases with Jody's 80 hp econo. We suggest that this tune be used as a daily driving tune for highway or long trips. However it has been noted that alot of our cusotmers have had a difficult time keeping their right foot out of it. With the added horse power it is quite a pop from stock. If used correctly the you should see gains of 2-4 from what has been reported back to us.

My own comparision with a 8900 lb. excursion I have had anywhere from 1-1.5 better driving around town and 2 better on long trips consistantly. The best thing to do is always make sure your truck is in good maintence and I always run a fuel additive at every fill up. I have been known for adding more then is really necessary.

You may want to also post this up in the regular forums to see what our customers have to say.

Diane

Calpyro · 04-01-2008, 10:49 PM

Thanks for the reply. I purchased one today. Additionally, I filled the tank and I will do a final fuel mileage calculation bone stock before using the DP chip. I will report back in a few weeks with the 80 Econo results.

Calpyro · 05-10-2008, 10:39 PM

I got the tuner and did one final tank full of diesel prior to the DP Tuner and accurately measured the fuel mileage at 12.7 MPG in general around-town driving.
After installing the Tuner and using another full tank, I measured the mileage at 16.1 MPG.
total improvement of 3.4 MPG.

**SeeYa** · 05-11-2008, 07:24 AM

Quote:

Originally Posted by Calpyro

I got the tuner and did one final tank full of diesel prior to the DP Tuner and accurately measured the fuel mileage at 12.7 MPG in general around-town driving.
After installing the Tuner and using another full tank, I measured the mileage at 16.1 MPG.
total improvement of 3.4 MPG.

Thank you for posting your results.

Enjoy!

Diane

DA BUS · 05-13-2008, 07:19 PM

Jody has been just the best to work with. I just got my chip back from him with the adjustments we discussed and I am VERY SATISFIED!

As far as mileage is concerned, when I bought my Ex 1.5 years ago I drove it back from OH to IL and got an average of 15.3 mpg (as calculated via long division -- not the lie-o-meter). With DP's Econo tune I am well above that around town! In fact I am seeing close to 22 mpg all hwy as calculated on long trips and the lie-o-meter says as much as 25.8 most of the time! As I said, I am VERY SATISFIED!!

ACD2 · 05-16-2008, 11:05 PM

My 99 got a jump of 1.5 MPG daily driving, but I nave not taken it on the highway to get an overall cruising reading. I have not driven it in months due to the high price of diesel, in fact last year I got a prius, and this year a Camry Hybrid. I didn't like the prius other than it got 65 MPG.

I did find the ultimate MPG booster though. Park the truck and ride a bike.

DA BUS · 05-19-2008, 10:18 AM

Unless you can demonstrate pedaling that bike & towing 10,000 lbs, that solution's really not going to work for most people here.

...although I would like to see that at a truck rally!

slowautoxr · 06-19-2008, 11:02 PM

My current '01 truck while running the 80hp econo tune seems to be getting the same fuel mileage as my old stock '99.

The fuel mileage has improved since this winter though. I haven't gone back to the stock tune to see if the improvement was from the chip or from summer fuel.

A question about getting better fuel economy. Would making the tranny shift early help? I noticed my truck won't shift into high gear until I reach 45mph or so. Is this something that can be changed with the chip?

Tomorrow I'm going to carry my car to the drag strip. The truck might have to make a couple of passes as well

I guess the fuel mileage of this tank is not gonna be too good.