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Ecoboost Mustang already lays down 255 whp and 330 wtq. Livernois tune puts it at 297 whp and 380 wtq. Given its weight (much lighter than the GT or my Dark Horse), it might beat the Chevelle LS6 even without a tune.

Car Craft went on to review separate performance efforts being made by Foulger Ford, Dave Lyall, and Wayne Gapp, and ended with a telling Boss 429 test session on the engine dyno at Crane Cams. When the best pull yielded 386 hp at 6,000 rpm with Ford's updated mechanical cam and dyno headers...

Today, the car is revered in most circles, and yet most of us know that as constructed, the biggest Boss was something of a dud in terms of performance. Leading up to the car's introduction, the automotive press was drooling with great anticipation of a "12-second Mustang," but in reality, a...

Now tear down that Boss 429 engine, balance and blueprint everything to detailed specifications, with higher compression pistons to take up that semi-semi chamber, run only high octane racing fuel, stick in a huge solid lifter camshaft, long tube headers, and a massive intake and carburetor...

They were all SAE gross and at the flywheel in 1969 (the change to net came in 1972). As for "underrated," it can be argued that the engines from that period were often optimistically rated for marketing proposes. Today's ratings are net, so it is arguable that the 1969 ratings, with no air...

Full E = 100% ethanol, 0% gasoline?

Arizona has to be the state where more forum participants live than any other state in the nation.

LOL. :crackup: The Palm Beach guy explained he is going through various settings to tweak things and will be continuing to do so for at least the next year.

Yes. :frown: I assumed that a Boss 429 would beat a modern 4 cylinder Mustang, but, after I posted, I looked up the quarter mile time. A lot of these old icons are not as fast as we thought they were. The 4 cylinder Ecoboost is impressive. The Coyote even more so. None of the old muscle...

Have you tried leaving it on 3, letting the vehicle cool off quite a bit, and then trying 2? Mine are definitely different.

I hope they keep the Sport mode shifts as-is. The shifts work well accelerating out of turns on a road course. Track mode shifts a lot harder, and drag mode even harder than that. I would kind of like the Normal and Sport modes not to have "stronger shifts," one for comfort and the other for...

So, are the GT active exhaust models and the Dark Horse going to be the same horsepower after tuning?

He beat me to it - ported intake manifold as well. BUT, the video highlights changes in horsepower from prior to the tune compared to after. This is actually development of the tune. He changes one thing at a time. He says in the video he made over 30 dyno runs as he changes various items...

Nope. Boss 429 ran in the 14s. Ecoboost still beats it in a drag race.

And, yeah, I bought the Dark Horse, but I am still impressed with the technological changes that have brought us so much horsepower. The Ecoboost produces more horsepower than the Chevrolet 350 did in 1969 and more than the Ford "HI-PO" 289 version in the 1969 GT 350. It also has more power...

The Ecoboost Mustang runs the quarter mile in the 13s and would have embarrassed a lot of the drivers at my high school in the early 80s with their supposedly "fast cars." An old Roadrunner with a big block 383 would have been running in the 14s. The hemi model would run in the 13s, but none...

It is a Steeda car at Palm Beach Dyno.

Why does the stock curve stop at 6,900 rpm?

Where do you get the bezel and boot? Fit and function well?

Wow, that looks way too easy. I am going to have to order one of the hoodies!