Tom Wilson
May 1, 2006

Horse Sense: These have to be the good old days. Using the standard 0.15 correction factor, the dyno figures in this story show BBK's otherwise stock '05 GT makes a nearly unbelievable 350 hp at the flywheel with nothing more than a better intake tube and a larger throttle body. There's no real sense to it, but it would be neat to sample such a Three-Valve in a nice, light Fox Mustang chassis.

In our January '06 issue we laid out an extensive report on cold-air kits for '05 Mustang GTs. Rambling on for 7 pages and covering 10 aftermarket cold-air kits for the new Mustang, that story told the tale. So it's difficult to believe there are even more cold-air kits out there-but just to prove there's always room for one more, we'll take a look at BBK's just-launched entry into this crowded field.

Assembled on the bench, the BBK cold-air kit displays its all-important air baffle. That's the black sheetmetal surround that isolates the air filter from the rest of the engine compartment. It keeps hot underhood air from diluting the incoming air, which is a real issue on S197 GTs.

Furthermore, BBK is coming to market with its larger replacement throttle body for the '05's Three-Valve V-8, so it was also tested for this article. This is BBK's first Mustang electronic throttle body, which is something of a landmark for the longtime throttle-body manufacturer.

This combination of cold-air intake and throttle body netted a 22.5hp increase at the rear tires. Tested individually, the cold-air and throttle body were worth 13 and 15 hp respectively, with the throttle body a little ahead of the cold-air intake between 2,500 and 4,000 rpm, but the gap closes at the peak. Furthermore, the BBK parts employ no electronic tuning, so these numbers are perfectly believable when checked against the results in our January '06 review.

Installing these bolt-ons is easy. As long as you have the tool box open and read the simple instructions, you'll have either of these parts on in 20 minutes, and in half an hour for the pair. Drilling and bending are not required. Only a few handtools are required, and of those, the only special ones are a few Torx-head bits. All the work is done atop the engine, you don't need a floor jack, and you get a 7.5 percent power increase.

Horsepower is rarely this quick and easy-so enjoy it!

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All testing was done on Brothers Performance West's in-house Dynojet chassis dyno. The subject car was BBK's in-house '05 GT, which was otherwise stock. Three runs were made in each configuration, and these are the best examples of each run (which varied little). Individually, the throttle body tested slightly better than the cold-air kit, but both offered about the same improvement over stock. Both worked over the entire rpm range, and together they formed a solid 20-plus-horsepower gain at the peaks and more up top. No electronic tuning was attempted; experience has shown it would also help considerably

Now here's something the old Two-Valve GT engines could have used-an intake manifold cover-up. Serving no other purpose than to improve the Three-Valve GT engine's looks, the BBK decorative intake plenum cover is offered at $199.99 in silver powdercoat as seen here, or $249.99 with a chrome powdercoating treatment. Installation is simple using four intake manifold bolts, and it can't leak!