HELP !!!!! more gas milage

[packy55]

I have a 97 with 4" exhaust, Green intake filter, Super Chip on tow setting (until I install the gauges). Tires are stock 285\75\R16. Have a cap on the back.

What do you suggest to get better gas milage??

I was getting 16-17MPG (before those changes listed) and now I am only getting about 14MPG.

WHY??????????

[01clj]

By cap on the back do you mean a topper? Because one of my buddies said he gets worse mileage with his topper on but that is with a gas motor not sure it would affect a diesel that much but guess it is possible.

[GM Duraturd]

the one thing i can think of is driving style. Now that you have the 4" exhaust and a few mods its easier to allow yourself to get on the pedal harder, and more often to hear that sweet sound and feel the added power. I dont know if this is the case but its something to think about.

[99SMOKR]

yea its not an ON/OFF switch, hahaha

[Big Bird]

you should be able to keep your tanks full of GAS indefinatley, it diesel FUEL that your truck runs on.

seriously here is a bump...

[dieseldan2005]

the winter blend fuel hurts. I dropped from 17 to 15 in december and now i average 13 with my mods listed. I hope it will pick up this spring.