had new injectors and injection pump installed about 3500 miles ago I got better mileage before I took it in right know I am getting at 70mph down the interstate 12.5-13 and pulling 32ft. gooseneck with 2 stripped cars on it 6.8-8.1 the pick-up has 181,000 miles its an 02 pure stock 265 tires(recalabrated for them) 4x4 don't know what to do with $4.42 diesel hate to go back to a gaser any help would be great THANKS in advance Mike also I am on my either 3rd of 4th set of injectors

I thought I heard once that a bad MAF could cause this anybody heard this before thanks Mike

My mileage suffered also after my injector change.

At the time I thought that it was due to the change to winter fuel but my mileage numbers did not come back up this spring.

I would be interested in hearing from anyone else with this experience.

Does it have to throw a code or SES light for bad MAF?

if the maf performance is way off it will set a code. not nessacarily a cel light though. if your worried take the maf out and clean it with electronics cleaner. you can get it at the auto parts store.

no lights coming on canged the MAF with my dads 03 and can't tell a difference goes in Friday to see if they can find anything

After having my injectors replaced several weeks ago, my mileage has gone up. Didn't run it stock for too long, but with the ppe on level 5 and a light foot, mileage is up a fair amount. With the edge stack I can get some serious smoke and the tires spin fairly easily. My power is also up quite a bit.:D