What does the Job code mean???

[Stugots13]

I'm new to the diesel world and am looking to buy a new superduty but have notice that the manufacture list a Job code. What is this and is one better to have over the other??? please explain

[mick1955]

Are you talking about the job number, built date of the truck????

[Stugots13]

ya that would be it. Over the last few days I have answered my own question. However, do the tunes work better with one particulat build dat e over another? I am currently looking to buy a truck and if there are 2 similar truck this my influence me on which one to buy, or am I looking into this too far?

[mick1955]

I would get a job 2, or job 3. My truck is a job 2, and no problems with it , or with the tunes.

[Stugots13]

Thanks, What kind of MPG increase have you noticed?

[mick1955]

I've seen 3-3.7 with my 4.10 rear end. But, I have to keep the rpm's around 2000-2199 64-67 mph. Any more than that and it drops like a rock.

[Stugots13]

Is that with running the 250 tune? The truck I'm looking at has 3.73's so it should be a little better.

[mick1955]

Stugots13 - Yes, it's with the 250 tune running on the highway.