What can I set all my Tuner settings at with out messing stuff up on 4.6l Fx4?
I'm on Premium tune .. rev limiter on 5900 and top speed to recommended..
What can I do with timing and etc

Any other setting input would be bad ***

 

You need to cut the rev limiter back to 5400, or you may balloon the torque converter.

 

X2, back that rev limiter off. You can try advancing the timing 2-3* since you are running premium. You need to listen for any pinging or knocking when you do. Not really sure what else you can do with bully dog. Have you checked out their member forum?

 

You also need to set the WOT shift points to at least 400 rpm under the limiter, or the overshoot will cut the rev limiter in.

The engine is good for at least 6k, but the TC isn't, unless you put a modified/beefed TC in.

 

DO NOT advance the timing by 3 degrees if you are already running the premium fuel tune, or at least don't make big jumps. You can, however, slowly eek the timing up until the engine tone changes. I would not go up faster than .1 degree. If you make a jump that is too big you could risk damage to the engine. The PCM will also automatically pull timing if it detects knock. You don't want that because when the PCM pulls timing, it pulls A BUNCH of timing.

Like the others have said, set the rev limit at 5400 with every WOT shift being 400 RPM lower.

For top speed, do not exceed your tire's rating. You don't want them to fall apart while going too fast.

IMO, stay away from shift firmness settings. Inexperienced members seem to have premature tranny failure from playing with things they didn't understand.

But not playing with anything you don't fully understand is the absolute rule on tuning. If you can't go a find the mechanical part (and understand how it works/why it works/what it does) on the truck you are modifying the tuning for, don't modify the tuning.

 

You think 2-3* is too much for 91+ octane? Gas is so crappy now a days, my vehicle ran better with a 2* advance. However it was the 5.4 with the Diablo Predator. Thanks for input, always good to have as much member experience as possible!

 

The OP mentioned that he is already running a premium grade tune. If you are running that tune AND running premium, that much advancement would most likely push him over the safety line. If he was running an 87 tune with premium, yes, 2-3 would be fine.

I'm not saying that nobody should be advancing timing, but if you do so, do it safely. I run about an additional 1 degree advancement on my custom PHP tunes but I got there .25 degrees (minimum increment) at a time. I could possibly go higher but because fuel quality varies I left it at what I consider the maximum safe area for the blends I use.

Also, timing advancement doesn't fix poor fuel quality. It actually does the opposite and forces the PCM to pull timing. But what you mention I have also noticed. The truck will run better with advancement on good fuel than if it didn't have advancement. I remember reading reasons why but can't remember them at the moment.

 

Yup, I glossed over the premium tune part. Glad you caught it. with regards to the advancement of timing on premium fuel, I am of the understanding that you want to detonate the mixture when compression is at its highest as compression is key to taking advantage of higher octane fuels. Advance it too far and you aren't getting everything you can out of the mixture, retard it too much and its the same scenario. Is that correct?

 

The best efficiency occurs at the point where it's advanced as far as it can go without causing spark knock/detonation, with a nominal safety cushion. With knock sensors, finding that point is far from being straightforward.

 

Here is how it works. The higher octane you have, the slower it burns. Advancing timing fires it earlier. The ideal situation is for it to finish firing exactly at top dead center, where it's compressed the most. If it finishes firing after TDC, you lose power and efficiency. If it finishes firing before TDC, you get spark knock because it's trying to force the piston down while it's still mechanically moving up - you lose the controlled burn and it spontaneously explodes.

 

Thank you sir!

 

To the OP, refer to this link for a little more info on Octane and timing.

https://www.f150online.com/forums/1783253-post4.html

Happy reading and keep us posted!

 

Sorry It's been awhile since Iv been able to reply to all this great info from.you all... Been working a ton here in the WTX Patch.

So all I have done is just left my Triple Dog on recommend

I did go back and set the REV to 5000 altho it still stops at 4ish I really have no reason to hold the gas and let it peg neway it a 4x4 not a race truck lol..

Still have it on Premium tires set to 33s and the top speed is at 121 that's what it was at when I went to the speed limit again NO need ta go that speed for me.. I think from going
10.5-11mpg to 14-18mpg now. It's fine that's cursing 75-80 on I20 from WTX to Azle FTW area is damn great.

1-2
2-3
3-4

No idea what they should be at without huntn something. Lol
I am new to the tuner thing and I like all the info I can.get...

The WOT I have not messed with cause it ask for shift points

For some weird reason tho the programmer shows my shift points at
65535 threw all gears but Idk why..