Question about rough running after customizing the tune

[shotgun]

I still remember my ring weekend (many moons ago). I felt like I was finally in the home stretch.

Post some pics when you get it!

[ticopowell]

Of course and I love your quote!

[Jackpine]

Originally Posted by ticopowell

Of course and I love your quote!

I think the quote's one of the best I've seen in a long time too! Colin Powell seemed a VERY intelligent General.

Back to your problem: Try using the custom options menu again, but this time, DO NOT adjust the WOT fuel (I'm assuming you may have tried resetting that before). In the past, that particular adjustment has caused the symptoms you describe. Leaving it alone seems to make everything fine.

Why this should be, I don't know. But, you probably do not need to change the WOT fuel anyway. Bill has it set so you get enough in any high demand situation. Let us know if this fixes the problem, please.

Now, if it's not that setting, it's probably one of the others. You can try adjusting each of them, one at a time, until you find the one that causes the problem. Then, tell us which one it is.

- Jack

[ticopowell]

so yeah what you said worked, didnt touch the WOT and it works just fine. I have had a few other small issues that worked themselves out, I needed to tow my dad's boat, so i did the 87 tow tune(custom) and when i started the truck it started, but it wouldnt hold an idle, it would rev, then relax, then rev then relax. All i did was make sure it had the right tire size and changed the timing to deal with the better fuel that was and still is in the tank (91 octane). If i remember right the first time i did that the truck died after a few seconds. so i reinstalled the tune with the exact same settings... and it worked fine without any problems!. when i switched it back to the performance tune it did the same thing, so i reinstalled it and it worked fine. any ideas?\
oh and PS the ring dance is set for the weekend of the 21st of may ill be sure to post some pics then!

[Longshot270]

I'm curious, what did you try setting the WOT fuel to when it acted funky?
Also are you going through each menu and changing each setting or are you just changing tunes and using the "Load Previous Settings"?
I would leave the timing alone while towing anything, even if you are using a higher grade fuel. This almost sounds like what my truck did when I took the intake snorkel out of the fender and had a breeze blow over it.

See if it still does that when you use all of the adjusted settings besides timing advancement.

[Jackpine]

I'd leave the timing alone too. The one time I tried advancing the timing, by a mere 0.25 degrees, it caused the idle to wander all over the place.

- Jack

[ticopowell]

I dont remember the original setting, i think i just bumped it up .1 for the WOT. but after not touching that and changing the timing for the gas i think 2 degrees like the manual said (.5 for every octane rating) the idle wandered. The first time I adjusted it i changed the tire size and timing, the second time loading it i just hit the previous settings spot and then loaded the tune and it ran fine. but yeah I think I will just leave it how it is right now since I am not having any problems with it. I think the last time I loaded a program i just changed the tire size, but im not sure. I think in the morning I will just reload the setting with no changes at all just to make sure nothing happens in the future. and with the tire size I think the speedo is now farther off than when it was, and I used numbers given in the manual for my tire size. oh well lol...

Thanks for all the advise and help

[88Racing]

Just some advice on custom tunes.

If they ain't broke don't fix them.

Bill has got them set up to maximize the performance of your truck within safe parameters.

If Bill tells you to adjust something then adjust it but otherwise leave the artist's painting alone.

Peace!