i am looking to increase my fuel economy in this van and i would like to know what my options are(tuner,filters,exhaust) i still want it reliable but i plan on keeping it for a long time. currently getting 12-13 mpg behaving myself, the truck is on the heavy side due to my equipment and parts (about 10k#), any pics of air filter installs would be great. thanks jeff

First thing I would do is exhaust. 4" turbo back will give you the best results for your money. Tuners = #1 EFILive, #2 Bully Dog. There is no aftermarket air filter, you have to make your own. The stock filter works fine unless you running big tunes. With that much weight what are your transmission temps ? Make sure your trans stays cool.

My gauge cluster doesn't show trans temp, which bullydog,and does your airbox pull from under the hood. Thanks

Bully Dog triple dog GT. This is a tuner with gauges. On the highway I average 2-3 degrees within AAT.

My gauge cluster doesn't show trans temp, which bullydog,and does your airbox pull from under the hood. Thanks

http://www.alligatorperformance.com/bully-40420-triple-diesel-dodge-ford-p-3746.html
you will love the power and the extra gauges it gives you.