For those that have tuned(N/A).....

[Point45]

Just to clarify my experience on the gt350, in the mornings when its mid 60's or lower it takes maybe 2-3 seconds to fire up when cold. I am not sitting there waiting or trying multiple times, when its warmer the start is almost instant.

Its NOT an issue from my point of view but it is a noticeable difference.

The reason I dont run the flex tune in the winter is Im more worried about killing the battery with doing this constantly. I have a very short drive to work and only drive the car about 3 days a week, even less during the winter as I dont like these tires in the rain.

What's your definition of "cold weather"? The F150 owners manual has things about e85 and cold weather in some years of the manuals

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[Point45]

The F150 is also 12/1, but like I said, the entire borderline timing map can elevate as much as you want but only once it learns ethanol. The Gen3+ mustang OSID has all the same logic as the F150 available; its just turned off and uncalibrated. Unfortunately its just a shortcoming of the GT350 logic.

Interesting, I assumed it was lower since they made such a big deal about the 5.2 being 12:1 and the other mustangs were 11:1 at the time

Its amazing what compression they are getting in normal cars now. It used to be something this high was only for the higher end stuff, one of the good things that came from the emissions/MPG rules I guess.

 

[engineermike]

It’s amazing what compression they are getting in normal cars now. It used to be something this high was only for the higher end stuff, one of the good things that came from the emissions/MPG rules I guess.

And us putting 12+ psi boost on 12/1 compression with 91 octane. It’s just insane by comparison if you lived through the 80’s.

We can complain about emissions all we want but emissions is why we have LS, coyote, ecoboost, gdi, 8-10 speed transmissions, etc. The automakers would have happily continued selling us 1950’s technology in perpetuity.

 

[Point45]

And us putting 12+ psi boost on 12/1 compression with 91 octane. It’s just insane by comparison if you lived through the 80’s.

We can complain about emissions all we want but emissions is why we have LS, coyote, ecoboost, gdi, 8-10 speed transmissions, etc. The automakers would have happily continued selling us 1950’s technology in perpetuity.

The fact I can comfortably daily drive a 12 second car with ac is nuts compared to what I grew up with.

The 80s were fun but a golden era of cars it was not. Everything was a box with wheels. I do miss pop up headlights.

 

[K Myers]

I really never wanted to mod this car, but I have been interested in the easy gains provided by a flex fuel tune. Additional low end could make the car a lot more fun to drive.
I'd love to hear some real world experience from those that have.

-What did you like the most and who did you use? How did the driving experience change?
-Is it worth it if you're running 93? I have access to E but wouldn't use it exclusively
-Is a CAI a good partner to the tune or unnecessary? PBD mentions it really does help at RPM

First and foremost if you are a A10 a tune will help you transmission also if you are going withh the CAI it will wake the car up remember more air in more air out (LTH) the tune will help. Look at the steeda closed box intake. I LOVED car was more responsive, I had steed closed box CAI, 2m LTH no cats. Tuned by @Rob Shoemaker

 

[robvas]

The fact I can comfortably daily drive a 12 second car with ac is nuts compared to what I grew up with.

Imagine this...(assuming you started with an 80's Mustang/Camaro) we had 15 second cars, 14 second cars, 13 second cars, 12 second cars....plenty of time in between. Faster cars as you got more money and experience.

right now you can get a $27k used Mustang, spend $10k on a blower and related items, and run low 10's or maybe even 9.9's

that's insane if you're a new driver today. Or you only other car was a hand me down from your family.

 

[galaxy]

Skip the CAI. Causes more problems and improvement is very small if even measureable.

The stock mustang PCM logic can be reconfigured for flex fuel and work EXTREMELY well, but it is a MUST to use PCMTec to get access to ALL of the required parameters. That said, I have basically no confidence in any aftermarket tuner to get this right. The mustang has the ability to be just as good at flex fuel as the OEM logic in the F150, cold starting and all. It really is astounding what it is capable of, but most tuners seem to just change stoich, add a few deg of timing and call it a day.

Aahhhhh very nice. When I got my tune, PCMTech was not available for the 350, nor was the AVID device. I'd probalby go that way today just for swapping on the fly and future options; love it or hate it, I want a ghost cam if I ever ditch my cats in the future.

 

[Keeffa]

I really never wanted to mod this car, but I have been interested in the easy gains provided by a flex fuel tune. Additional low end could make the car a lot more fun to drive.
I'd love to hear some real world experience from those that have.

-What did you like the most and who did you use? How did the driving experience change?
-Is it worth it if you're running 93? I have access to E but wouldn't use it exclusively
-Is a CAI a good partner to the tune or unnecessary? PBD mentions it really does help at RPM

I have a Roush CAI, H pipe and tune . Done by Mustang Motorsport in Melbourne Australia. I have a 2018 GT 10 speed auto.
There dyno got 315 WKW and 370 kw at the flywheel so about 30 kw more which is very noticeable. The best thing is how smooth and how much more drivable it is especially in sports mode. I've also got all the Steeda stop the hop goodies. Godda get the power to the ground. Big diff with the tune, well worth it.

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