Dale Amy
September 9, 2011
Photos By: Courtesy Livernois Motorsports

Horse Sense: MagnaCharger's S197 kit brings a three-year limited warranty on the supercharger system itself, and an optional 36,000 mile/three-year powertrain warranty can be purchased for $200. See the company's Web site for details.

Lately it seems that hardly a week passes without our hearing about a new power adder for S197 GTs. This time, the big box came from our friends at MagnaCharger in Ventura, California. It was filled to the brim with the company's new intercooled, Roots-based, all-inclusive kit for '05-'06 Three-Valves. It arrived at Livernois Motorsports' headquarters in Dearborn Heights, Michigan, for installation and testing on what we thought was a nearly-new '06 GT convertible. The fact that Lon Johnson's GT was in reality an early '07 model would cause Livernois technician Tim Skardoutos the only problems in an otherwise be a simple install. The problems resulted from Ford making significant changes to the GT's cooling-system plumbing for the '07 model. More on this as we go along, but MagnaCharger's engineers are now hard at work on a version of the kit for that year. So, if you own an '07, have some patience.

If your GT is an '05 or '06, bolting on this kit should go quickly and smoothly, aided by MagnaCharger's comprehensive installation manual, which is fully illustrated with color photos and schematics. The blower itself, with an intercooler core/intake manifold, fuel rails, and 39-lb/hr Cobra injectors is shipped as a complete assembly, ready to bolt on in place of the factory intake/fuel hardware. A jackshaft allows retention of the alternator in its centralized factory location. As with many recent blowers, kits are available with a preloaded programmer to flash tune your processor. They're also available without, so you can have a custom tune done at your favorite shop. MagnaCharger has a specific calibration for automatic GTs, one with shift points, converter strategies, and line pressures optimized for the resulting increase in grunt.

We'll let the photos, captions, and sidebars do the rest of the talking.

What's A magnacharger?

At the heart of every MagnaCharger is an Eaton-built, Roots-style supercharger so Magnuson Products doesn't manufacture its own blower guts. That is left to Eaton Corporation's extensive experience and highly automated high-tech facilities. Eaton wouldn't be a supplier of OEM superchargers to a number of domestic and European car builders without having a world-class reputation for quality and durability. Magnuson is Eaton's exclusive distributor of the company's automotive aftermarket superchargers in North America.

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What Magnuson does is take an Eaton blower with displacement appropriate for the application-such as this kit's 112ci-per-revolution MP112-and engineer a complete kit around it. In other words, the supercharger itself may be generic, but Magnuson's job is to design manifolding, intercooling, and all other ancillaries for each vehicle. They do this job well.

WHEELS OF FORTUNE
BASELINE MAGNA CHARGER GAIN (LOSS)
RPM POWER TORQUE POWER TORQUE POWER TORQUE
2,500 126.1 264.9 180.1 378.4 54.0 113.5
2,600 130.1 262.8 187.6 378.9 57.5 116.1
2,700 135.8 264.2 196.4 382.1 60.6 117.9
2,800 142.1 266.6 206.9 388.1 64.8 121.5
2,900 147.1 266.4 215.6 390.8 68.5 124.4
3,000 150.9 264.2 224.9 393.8 74.0 129.6
3,100 155.5 263.4 233.0 394.7 77.5 131.3
3,200 161.7 265.3 241.7 396.6 80.0 131.3
3,300 167.3 266.3 249.1 396.4 81.8 130.1
3,400 174.3 269.3 256.6 396.4 82.3 127.1
3,500 183.4 275.2 264.7 397.2 81.3 122.0
3,600 191.4 279.3 273.8 399.5 82.4 120.2
3,700 198.3 281.5 281.5 399.6 83.2 118.1
3,800 203.8 281.7 289.4 400.0 85.6 118.3
3,900 211.3 284.5 298.0 401.3 86.7 116.8
4,000 219.7 288.5 304.2 399.5 84.5 111.0
4,100 227.1 290.9 311.4 398.9 84.3 108.0
4,200 234.1 292.8 319.5 399.5 85.4 106.7
4,300 240.8 294.2 326.5 398.8 85.7 104.6
4,400 248.3 296.3 334.4 399.2 86.1 102.9
4,500 253.5 295.8 340.9 397.9 87.4 102.1
4,600 256.8 293.2 349.1 398.6 92.3 105.4
4,700 260.4 291.0 356.5 398.4 96.1 107.4
4,800 265.0 289.9 365.6 396.7 100.6 106.8
4,900 268.8 288.2 366.1 392.4 97.3 104.2
5,000 272.8 286.6 373.4 392.1 100.6 105.5
5,100 273.4 281.6 378.3 389.5 104.9 107.9
5,200 275.5 278.2 382.8 386.7 107.3 108.5
5,300 275.9 273.4 385.4 381.9 109.5 108.5
5,400 279.2 271.6 389.7 379.0 110.5 107.4
5,500 281.0 268.3 392.3 374.6 111.3 106.3
5,600 280.8 263.4 395.3 370.8 114.5 107.4
5,700 282.2 260.0 397.9 366.7 115.7 106.7
5,800 282.3 255.6 400.6 362.8 118.3 107.2
5,900 282.9 251.8 408.7 357.5 125.8 105.7
6,000 282.9 247.6 409.4 351.4 126.5 103.8
6,100 283.1 243.8 409.1 346.2 126.0 102.4
6,200 282.6 239.4 409.0 341.0 126.4 101.6
6,300 280.3 233.7 409.0 336.1 128.7 102.4
6,400 277.0 227.3 409.0 329.9 132.0 102.6

Soon after the Livernois crew strapped the ragtop down on the company's portable Dynojet, Dan Millen began tuning the combo with his SCT hardware/ software. With gains of 132 hp and 131.3 lb-ft of torque, the results speak for themselves. This MagnaCharger adds nearly 114 lb-ft of torque at a low 2,500 rpm, and 132 hp at 6,400 revs. Roots-style blowers are known as prodigious torque generators, but sometimes run out of beans as the tach climbs. That's not the case here, so we're guessing the fifth-generation MP112 supercharger has made significant efficiency gains over its predecessors.

Our only disappointment was having to leave days before the "retro" cooling system was in and the dyno session took place, meaning we had no seat time and can give no driving impressions. Eaton blowers are typically soft-spoken, so we imagine you should be able to sneak up on your opponent with this stealth weapon.

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