ECONOMY TUNE

tiger094 · Post by **tiger094** » Wed May 02, 2007 6:18 pm

Am checking back for status on an economy tune for the u731. I have tried the perf/econo tune on my 06 ctd w/ 35s, but the mileage is a disappoinment. I was avg 16.5 around town with a light foot, Stock is about 17.5. When I initially installed the tow tune, mileage went up to 18.5 - 19 mpg in town. Lately I am noticeing that slipping to 17.5 as well. The improvement in economy is what intrested me in the predator. What mileage is anyone else with a late model 5.9 getting? Any tips on improving mileage? I removed the turbo baffle and noticed much better pick up from a stop.

djensen9367 · Post by **djensen9367** » Wed May 02, 2007 11:54 pm

you are doing quite well, what are you expecting??

Herculou · Post by **Herculou** » Thu May 03, 2007 10:37 am

Have you calibrated for tire size?

Post by **mikel** » Thu May 03, 2007 1:35 pm

The 35" tires are surely not helping the mileage.
Are you sure your previous mileage readings were correct if the speedo was off due to the larger tires?

tiger094 · Post by **tiger094** » Thu May 03, 2007 4:12 pm

I have the new tune and have calibrated for the new tires. This last in town mileage averaged 16 mpg. When I initially installed the tune I was getting 18.5- 19 mpg. That was about 3 weeks ago, its been declining. The onboard computer says 20 mpg but the actual was 16mpg.

Post by **mikel** » Thu May 03, 2007 5:13 pm

If you just fixed the tire size, any mileage calculations you did prior to that were incorrect.

tiger094 · Post by **tiger094** » Thu May 03, 2007 5:57 pm

I have been running the tire size cal for about 2 months. Its not me goofing up. All mpg averages are accurate.

tiger094 · Post by **tiger094** » Thu May 03, 2007 5:59 pm

I have been running the tire size cal for about 2 months. Its not me goofing up. All mpg averages are accurate.

MBR · Post by **MBR** » Mon May 07, 2007 9:08 pm

how do you correct the tire size on the 7130??