Best tuner for stock 5.4

I just moved/copied this from 5.4 Ford Raptor Engine discussion and performance mods, there is not as much activity there as there is here. Thanks to the guys who responded there.

First, I have searched on here for hours, it seems that the 5 Star is popular, but some post were older, I went as far as to take a tally of props on the different tuners, 5* and JDM had the most, the choices are many, Livernois, ST, SVC, SCT and 5 star, there others too, but these seem to be the most popular.

The truck is stock except the Borla exhaust, of the tunes, my goal is performance obviously, but really the trans and the sloppy gas pedal is top of the list of needed improvement.

So it's 2021 has much changed with tuners, most of the info I read was dated from 2011-2015, I'm leaning toward 5 Star, anybody have any input toward another source? If so why, I should add I have to run that wonderfully crappy California gasoline.

I do want improved shifts, but not too harsh and the same for the throttle, not hair trigger or over sensitive, I seen a few complaints on both here.

Thanks in advance for any input, good or bad, let it fly.

Yeah, and your not going to get any different responses here either.
I would suggest going to the F150 forum.
You might find more 5.4L guys still active there.

The 5.4L section on this forum has been kind of dead for a few years now.
The only reason you see new threads in that section is because guys don't read the small print under the section header.
It's not there fault, the forum changed the look and things a few years back.
There used to be 5.4L and 6.2L in bold next to the their section headers, now it's in small font under the section header.
And if you look closely at the new threads in the 5.4L section it's all 6.2L guys to lazy to read the small print.

I've been complaining about that for some time now!
@Big Blue

I went with JDM!!

Livernois Mycalibrator with phaser lockout! Excellent custom tunes and there are many tunes for each vehicle that you’re never charged for any updates or tunes that you want


Sent from my iPhone using Tapatalk

Had a 5.4. SVC was amazing. I got a 6.2 with a street tune now and barely can tell the difference between them unless i load up the performance tune. Id prolly pick JDM now since SVC doesnt make tunes anymore.

Btw hope the cam phasers don't act up on your like mine did on my old 5.4. Fixed them and sold it at 131k miles.

Already went thru the cam phaser thing, a couple of actuators and thicker oil cured it.

I had 5 star on my '10 5.4 and have them on my 6.2. They were very helpful and the tunes work well. They stand behind their product.

I went with JDM, feedback was positive on both JDM and 5* some comments about throttle maps being too sensitive and shift points slightly harsh with 5*

I’d go 5 Star. They’ve been working with Modulars for forever in a day. They know what they’re doing.

5 star has a less than stellar rep on the 6.2l. My 5 star tune had shift issues, throttle response was weird and the fuel economy was poor (I am not the only one who wasn't satisfied). YMMV on the 5.4l, but I would bet the trans shift problems would be the same.