Hi guys i have a diablo programmer with a custom tune, I am programming the truck myself i have a few questions with the parameters apreciated any help guys I drive a 06 fx4 supercr 5.4lts

 

Come guys any body, i really need somebody cause here in my country we dont have dynos... etc apreciated

 

What do you mean by "programming the truck" yourself? Do you mean changing the parameters of the canned tune which came with the Diablo? Or did you have someone write custom tunes and load it into the Predator, and you have questions about that?

 

yes i had someone that loaded the custom tune in to the predator but this guy that loaded the custom tune dint know how to play with the parameters so i doing it myself but i dont want to play to much cause i dont want to brake the truck you know, but i have a little idea of whats all about.apreciated finally someone

 

A person who writes custom tunes doesn't know how to use the tool? Doesn't give me a lot of confidence in his tuning ability!

What is it you're wanting to change, and why? Timing, shift points, shift firmness, etc. ?
What mods to your truck?

 

Well the guy who donwloaded the custon tune into the programmer played a little bit with the truck but i do feel the truck with minimal changes, i feel the truck as it is with the canned 93 octane fuel that comes with the programmer, i know it can do a lot better with the custom tune, i seeing it in the states. I use my truck for my daily driving, but i like to drive fast since we dont have speed limit here and the gas is really cheap, sometimes i do 1/4 mile past those are my driving habits. I dont know if you are familiar with this programmer but the things i want to changes are.

1.Global Spark Advanced
2.Spark Advanced from 2k to 4k
3.Spark Advanced from 4k to 7k
4.WOT fuel from 2k to 4k
5.WOT fuel from 4k to 7k

The mods that i have are a K&N cold air intake and a magnaflow cat back system.

PD: In my country is all the time hot like 90 85 farenheit all year with no humidity. Thanks dude i really apreciated that you are helping me

 

Okay, for timing, you're going to need to datalog the truck. Diablo has a free data log viewer program on their site to do this with the Predator. You'll need to log the knock sensor in the truck and view it with the data log viewer. If its not getting spark retard at 2k-4K then you can add some timing there, same with 4K-7K. Take it up 1 degree and log again. Do it until you get spark retard and then back it off 1 degree.

For WOT fueling, you generally won't need to touch it. The Predator should enrich the fuel properly and giving it more will usually result in worse WOT mileage with little to no power gain. The only way to know for certain if there is room for more fueling is with a wide band O2 sensor connected to the truck to see what the current air/fuel ratio is.

 

Leave the spark alone, as I doubt your fueling is even correct.

Learn to monitor the LTFT and make changes to the maf curve adjustment.

 

A couple of points I'd like to offer...

He's new at this. Let him learn data logging and handling the smaller things before moving on. He can ask questions as he learns. Normally I'd say don't touch the MAF at all but he does have a cold air intake, but not having seen the latest F150 Predator revisions I'm not sure if it can or can't give the level of detail/change needed to do it right. I'll plead ignorant on that, but even so, I recommend he stay away from the MAF curves until he's familiar and comfortable with basic logging and changes. If he's running lean he's likely going to get a little knock and can pull out some timing until he's competent enough to play with MAF settings. K&N isn't generally known to throw lean codes these days (there are exceptions) not like the early 2004+ intakes they put out.

2. Diablo's tunes, like most canned tunes, are a tad conservative with timing. Depending on which octane measurement system they use in Venezuela, he may or may not be running higher octane than USA R+M/2 93 octane. Only way to know if timing is being left on the table is to log it.

 

DigitalMarket,

What is so hard about data-logging LTFT, find the average percent and then applying it to the custom settings in the device?

 

Its not hard to you and I... but this guy appears from his own words, to be completely and utterly new with this.

 

I think this is a good time to invest the ~$50 on a custom tune.

 

guys i see there is a battle going on here, what i want is take the most out my custom tune whatever way possible thanks both for helping me on this. like you say i am new to this so try to explain me step by step, in details whats all about that you say, i have no clue what is the data loging, the LTF etc. thanks guys again for the help.

 

No way?

I don't care how 'utterly new' anyone is, they either learn fueling first or don't make any changes.

Also, adding spark via the tables 2-4k & 4-7k works as a percent, not a direct modifier. So if he has to add 1.5d of spark, how much percent is that?