Earlier this month, HP Tuners announced that it had developed tuning support for the S650 generation Ford Mustang and a host of other models, which was huge news given the fact that those vehicles were touted as being “much more difficult” for third party companies to tune due to their heavily-encrypted Fully-Networked Vehicle (FNV) electrical architecture. As Ford Authority was the first to report, Steeda became the first company to test this tune on a track in its own Ford Mustang “White Stallion” tester, and now, another mule from the same company is hitting the dyno.
That tester is Steeda’s Silver Bullet Ford Mustang, a car that has already spent its fair share of time on the track and trying out different modifications since it landed in the company’s fleet. The pony car was placed on the dyno for a couple of baseline runs first – one in sixth gear, and another in seventh. As has been the case thus far, the S650’s speed limiter kicks in a bit early and ruins the fun, but the car manages to put down 443 horsepower and 383 pound-feet of torque at 6,800 rpm, while in seventh gear, it made 463 horsepower and 415 pound-feet at the wheels, this time, at 6,400 rpm.
It is worth noting that the Silver Bullet isn’t stock, however – rather, it’s equipped with AFS ported heads, a 1320 Junkie ported manifold, a Steeda cold-air kit, and Kooks two-inch long tube headers, with a bit of E85 in the tank mixed in with regular fuel.
With a full tank of E85 and a tune, Steeda’s Silver Bullet Ford Mustang laid down 464 horsepower and 393 pound-feet of torque in sixth gear – gains of 23 horsepower and nine pound-feet. In seventh gear, it churned out 482 horsepower and 416 pound-feet – gains of 20 and 16, respectively. After some revisions, the Mustang crept even higher, to 487 horsepower and 418 pound-feet of torque, surpassing the 7,000 rpm mark in the process – not bad for a simple tune, we’d say, and there were a few more ponies to be found without SAE involved, too.
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