My 07 LBZ is burning fuel like crazy right now and I'm looking for some help, any advice or things to check would be appreciated. It's a c/c, dually, long box, 4x4 currently running at 25ltrs per 100km.

 

can you give us any more info??? are you making oil? is it smoking excessively? how many Kilometers can you get out of one tank of fuel? does the truck smell like fuel?

 

So, I cleaned my MAF sensor and put a chip in it, now it's running around 18-19 liters/100 km or 12-13mpg, which I still don't think is very good. It doesn't smoke hardly at all unless you really hammer on it, there is no raw fuel smell at any time. I am wondering if there is any advantages to taking the cat off, it's not neccesary where I live. Thanks

 

I have been running straight piped for 30k miles with no problems at all, aside from some more noise and better flow it hasnt hurt a thing

What tuner are you running? 12-13mpg is pretty terrible, thats what i got before i tuned my truck

I know with winter fuel and idling my trucks fuel consumption has gone up, but im still able to get 20-22mpg highway with my 65hp tow tune

 

I'm running a bully dog PMT. How bad is it gonna drop when I start to pull a trailer??

 

You need to change to cleaner better tunes like PPE or EFI. I get 16.2 towing 6k everyday in town.

 

BriteWhiteRam is right, even with a tune you should still hit 10.5L/100km empty on a good day, 12-15L/100km should be typical. How many km's on the truck? Have you checked the injector balance rates?

 

The truck has just turned a 100k, so to go to a different tuner how much $$$ am I lookin at.

 

Our past expierences are that when a truck is getting that terrible of mileage it dosen't go down much more when you latch on to a trailer.

 

Phoenix, what's on it right now for a tuner? What mods you got? You should fill out your sig with all that stuff, it'll be easier to gain insight and offer more relevant advice.