Basic upgrades?

[larryh1]

I am just starting with the diesel motor. Did my first long pull (500 miles) and was not pleased with my mileage at all. (see my response in DMax 6600 - gas mileage). I am going to a 4" exhaust, superchip tuner, and maybe a different filter. After reading about filters here, I don't know if I'll change.
Does this setup sound like it is going to help me? Or is the sales person trying to make some money off a newbe? I am not looking for "smoke the tires" power. I want decent mileage with decent power.

Thanks everyone, I really enjoy reading what everyone has to say.


Larry.

[SoTxPollock]

Larryh1, just let me say my truck felt sluggish until it got about 20, 000 miles on it it continues to run better and stronger the longer it runs, its getting close to 100, 000 miles now and really runs strong like I always thought it should. Give the engine a chance to break in you won't be sorry.

[larryh1]

Okay, thanks SoTx.
I checked with the dealer, who was very good about it. He said the same thing as you and he let me bring the truck in and checked everything while I waited. No error codes, everything is set right, no flow problems and he checked for any service bulletins. Everything is good. He said be patient and keep checking it....he will work with me.

Larry

[Prestonia24]

I'd say the first 3-5000 miles on my LBZ i was getting terrible mileage. I started getting much better mileage somewhere near 4k miles... It just seemed like it needed the break in, and i needed my Right foot to get used to where the sweet spot was in my new Diesel. (coming from 5.3L gasser)

I also noticed i was running 20lbs low in my front tires... (not good for gas mileage).

The 285/65s that are on there state max PSI of 80, and last check they weren't even pudgy, but were reading at 58 using my new analog tire gauge. Typically i load them between 70-75, as i could care less for the ride quality, I want less friction and better mileage.

Seeing mid 17s, and approaching 18mpg combined city/hwy after 7800 miles.

[larryh1]

I run my tires on the high end too, Prestonia. I'm like you, I'm not concerned about the ride. I think before I do any upgrades I'm going to drive it more and start driving it a little harder. I've been concerned about the breakin and did not put my foot in it like I would normally drive.

Thanks for the reply.

Larry

[Stlheadake]

I run my tires on the high end too, Prestonia. I'm like you, I'm not concerned about the ride. I think before I do any upgrades I'm going to drive it more and start driving it a little harder. I've been concerned about the breakin and did not put my foot in it like I would normally drive.

Thanks for the reply.

Larry

I have an 06 LLY one month later my dad got an 06 LBZ we have been comparing notes since last May. I babied mine for the first 2K or so looking for the 'best' milage. I averaged (mostly city driving with most hops less than 20 miles or so) around 14-15mpg (using onboard computer). I was VERY disappointed!

Dad was doing more or less the same. His LBZ was seeing 13 -14 but I attribute that difference to the right foot. He was used to driving his 6.2 (still runing strong at 220K getting 24 hwy mpg!) which is admittedly anemic compared to his LBZ.

I have 11K on the clock, have had a couple of long trips and average around 18 empty on the hwy. I'm still not tickled, but it was getting better. Dad took a 4k trip to AZ and through the Rockies this fall and averaged 20 (hand calculated)on cruze!

I did just order a custom tune and exhaust from Kennedy. I am looking for milage both towing and empty. With these mods, I should do a little better. Enough for them to pay for themsleves in fuel savings (I HOPE!)