My dad keeps bugging me to learn how to tune using HPTuners, but I hopped on there to get started and I'm just so overwhelmed by everything. Could someone lend me a hand and help me understand what I'm looking at and narrow down what I need to focus on to tune a truck? Recently I've been interested in doing it but with all the timing correction tabs and such I couldn't even begin to know where to look or narrow down what I need to focus on. I'll love you long time if you help me out lol. Thanks!

Only if I knew what to look for in compound set up  

Sounds tempting to say the least. But for now I've spent way more then anticipated in the last year.

On 9/23/2018 at 9:22 AM, TheGreatWhite said:

03 1 ton single wheel 6spd with pretty much just an Airdog on it. He is a farrier so he just drives it for mileage.

 

So what is he not happy with on the tune he has?

 

03 OEM tuning is pretty good for mileage when empty. 

1 hour ago, AH64ID said:

 

So what is he not happy with on the tune he has?

 

03 OEM tuning is pretty good for mileage when empty. 

He was getting 21-22 with the Smarty Jr then got custom tuning and is getting 17.

39 minutes ago, TheGreatWhite said:

He was getting 21-22 with the Smarty Jr then got custom tuning and is getting 17.

 

Actual or overhead? 

2 minutes ago, AH64ID said:

 

Actual or overhead? 

Actual

8 minutes ago, TheGreatWhite said:

Actual

What settings was he running on the S-Jr?

1 minute ago, AH64ID said:

What settings was he running on the S-Jr?

Performance torque 3 timing 2 I believe

22 minutes ago, TheGreatWhite said:

Performance torque 3 timing 2 I believe

 

He should be able to get that mileage back then. 

Just now, AH64ID said:

 

He should be able to get that mileage back then. 

The kid that did it said he was getting 20 easily with and without 12v and the best he's gotten is 19 I believe and he's mad about that.... Like he keeps bugging me to start tuning so I can fix it.

Even with custom tuning and 03/04 pistons I rarely break 18-19. I have gotten over 20 twice in 30K miles. 

 

I never ran 03 S-Jr programming but S-JR 04.5-07 tuning never got me over 20, and rarely 19. 

 

With a 12V tune I can break 19 pretty easy. 

Just now, AH64ID said:

Even with custom tuning and 03/04 pistons I rarely break 18-19. I have gotten over 20 twice in 30K miles. 

 

I never ran 03 S-Jr programming but S-JR 04.5-07 tuning never got me over 20, and rarely 19. 

 

With a 12V tune I can break 19 pretty easy. 

He got 20-22 all the time with the Jr and he was happy about it, then decided to get the custom tuning cause it offered the same and other things without mileage compromise, or at least we thought.

14 minutes ago, TheGreatWhite said:

He got 20-22 all the time with the Jr and he was happy about it, then decided to get the custom tuning cause it offered the same and other things without mileage compromise, or at least we thought.

 

It should be able to get the same mileage, but there are plenty of other things that would effect overall mileage with custom tuning such as duration, pressure, throttle sensitivity, etc. 

Just now, AH64ID said:

 

It should be able to get the same mileage, but there are plenty of other things that would effect overall mileage with custom tuning such as duration, pressure, throttle sensitivity, etc. 

How much could the fan running affect mileage? His fan runs pretty much all the time on 12v and we don't know why. I can't edit the tune or see what it's doing since the kid locked it

It would certainly hurt it, as it takes quite a few hp to run. If it's loud enough to hear then I would guess a couple mpg. 

 

I lost about 1-1.5 mpg on a road trip where the fan was running about 50% of the time back when I was messing with different fan settings. I never heard it but I could see the fan rpm's and duty cycle were up. 

10 minutes ago, AH64ID said:

It would certainly hurt it, as it takes quite a few hp to run. If it's loud enough to hear then I would guess a couple mpg. 

 

I lost about 1-1.5 mpg on a road trip where the fan was running about 50% of the time back when I was messing with different fan settings. I never heard it but I could see the fan rpm's and duty cycle were up. 

When we went to go get my 99 motor he had it on 12v and it ran the whole time.

 

He said it only does that on 90*+ days

Any luck with tuning?