Need advice for better fuel mileage?

[Txgunrunner]

I average 14.88 in the city and last weekend went down to the coast and only got 15.88? I never drove faster than 70MPH, use Diesel Kleen(Grey) with every fill-up, have done the DIY mod and cut out muffler and have a stock 3.5 inch straight pipe. Any suggestions?

[dmd]

Well... Slow down is the best milage maker. Additives usually just quiet things
down and dont help milage. 65MPH max will get you 1.5-2 mpg.

You will never recover the cost with milage, but here is my list for you. (in order)

- In tank and pre-pump mod, that helped cure my air leaks
- Remove the intake air heater
- Chip with econo setting (get a custom chip)
- If you tow you will need a WW or a intake housing to eliminate surge with a load.

[tubular031]

That sounds about right. Slow down to about 1800 rpm and you will pick up a little. all my chip did was add power and my MPGs stayed the same. I like it

[CT Performance, Inc.]

None of the fuel additives have ever given me a mpg incress. TW chip will. 1-2 with your other mods.

[nc1500]

Though not recently updated, my thread will give you an idea. I'm averaging 20+ every fill up (before CNG).

Real World Fuel Economy (not for lead foots)

[Txgunrunner]

Appreciate all the advice. Thanks guys!!!

[Jarrod B]

whats your gears?

70 for me is dead on 2k rpms