Need Help on '04 5.4 custom tunes.

[Longshot270]

Originally Posted by cajunboy2208

Eh? I got an 87 custom tune months ago. And I am wishing I went with the 93. So all I need to do is add 2 to the timing and I can start running 93?
The stock 93 performace tune did better than my 87 custom performance tune...

You can run 93 and add about 2-3 degrees of timing to it. But start with 1.5 advancement. If you dont have trouble go to 2 then 2.5,2.75 but I would advise against going over 3. When you are adjusting the timing you will raise it and get a tiny bit more power, when you dont have any increase in power or the engine knocks then take it down a bit. You do not want to have too much timing advancement because that is really bad for the engine.

Funny, my custom 87 on 87 beats my canned 93 on 93.