new to me 08 350....tune or dont tune????

[djburkeen]

hi guys,

just purchased an 08 350 crew cab lariat long bed. i live in west ky. found the truck on ebay....flew in and drove home. truck didnt look to have any aftermarket parts.

here is the question.

i avg'ed 19ish mpg at around 65 to 70 mph on an 800 mile trip home. now i drive pretty conservatively, but is it possible to achieve this mileage without a previous tune? it does still have the dpf in place and has the factory catback. i was pleasantly surprised with the mileage and dont wanna screw up a good thing. but the stock tips dont look too good as this truck didnt have the chrome pkg. another thing i was unsure of is if 1 regen in 900 miles is normal? it probably isnt tuned as the one time i saw the "cleaning" come up i switched to avg and it did quickly drop by around .3 with no apparent reason.

so i am looking at purchasing a dpf back exhaust for around 350 bux, but if i could see even better mileage with a tune and dpf delete i would be for it. this truck is not a dd and will be used mainly to pull a toy hauler. but better mpg's would is always welcomed.

Suggestions????? thanks in advance.

[superduty6.4]

Originally Posted by djburkeen

hi guys,

just purchased an 08 350 crew cab lariat long bed. i live in west ky. found the truck on ebay....flew in and drove home. truck didnt look to have any aftermarket parts.

here is the question.

i avg'ed 19ish mpg at around 65 to 70 mph on an 800 mile trip home. now i drive pretty conservatively, but is it possible to achieve this mileage without a previous tune? it does still have the dpf in place and has the factory catback. i was pleasantly surprised with the mileage and dont wanna screw up a good thing. but the stock tips dont look too good as this truck didnt have the chrome pkg. another thing i was unsure of is if 1 regen in 900 miles is normal? it probably isnt tuned as the one time i saw the "cleaning" come up i switched to avg and it did quickly drop by around .3 with no apparent reason.

so i am looking at purchasing a dpf back exhaust for around 350 bux, but if i could see even better mileage with a tune and dpf delete i would be for it. this truck is not a dd and will be used mainly to pull a toy hauler. but better mpg's would is always welcomed.

Suggestions????? thanks in advance.

Did you hand calculate the mileage or just take it from the reading in the dash. The reading in the dash tends to be fairly inaccurate for the most part. Typically people see better mileage with a delete but we are talking 10-20% better on average.

[pyro2nite]

Get rid of the DOC/DPF crap. Even if you get the same mileage, and you won't, it will be better, no more fuel in the crankcase. Very important if you want the truck for a long time.

[travisH3]

And especially since you won't be driving it much and only to tow. It will create alot of soot and clean the exhaust filter more often and net you way worse mpg. Driving for a while on the highway will get good gas mileage because everything is hot enough. Regen will be quicker on the highway with temps up than if you were doing city driving while in regen.

The 6.4 is a dream machine when tuned. I went from about 9 mpg towing to 13. The dpf was hard on the truck because I don't do much highway and long driving. Its mainly around town heavy towing. So I got rid of the dpf at 20k miles. At 28k almost and the truck just loves the tune.

[djburkeen]

thanks guys....tune it is.

now i think i gonna go with hs minimaxx and exhaust and intake.

will that pretty much cover it?

obligatory pic btw.....

[DSTRBD]

Looks great, congrats!

Yes, H&S Mini, exhaust, and intake is the way to go.

[pyro2nite]

Good choice............ Make sure you get back and tell us how it comes out. Hint...............there will be a smile on your face.

[djburkeen]

Ok guys ordered mini maxx, 5" downpipe back with muffler, and sb intake through ptp. Any changes i should try and do before order ships?

Cant wait to get this stuff put on. This is my first "big" truck and im loving it so far. Had a 5.7 tundra prior had to sale that since we ordered a 38' toy hauler.

Dustin

[blackcloud2k]

NO muffler. I think everyone will tell you that you will put the muffler on, and then a few weeks later take it off. These trucks are still to quiet for a diesel with a 5" no muffler. It might save you a few $$$ and you wont have a muffler taking up space in the garage.