Hyperpac Computer - Hyperextend The Performance Of Your Magnum

Once mounted, we tucked the cable under the driver-side door trim. This way the Hyperpac can be unplugged and removed from the car while the cable remains in place.

Once the vehicle information was loaded, we used the performance-tuning option to reprogram our car's factory computer. This procedure took about ten minutes, but the results were certainly worth it.

Under the driver-side dash, you'll find the factory computer's diagnostic port. This is where the Hyperpac plugs in. We tied the extra cable up under the dashboard with tie-wraps.

Once installed and plugged in, we used the easy-to-follow touch-screen prompts to enter our vehicles information, including any performance upgrades and nonfactory tire sizes.

With our computer reprogrammed, we headed to the staging lanes to get some times. With the programmer on the setting for premium fuel, we saw our quarter-mile times improve from 14.80s to 14.40s. Not bad for plugging in a computer!

Between rounds, we played with the many functions of the Hyperpac computer. In addition to adding horsepower and torque, the Hyperpac can be used to change the top speed limiter, rev limiter, and shift points for additional performance gains.

After testing the performance tuning for premium gasoline, we took it down to the level for midgrade fuel. Quarter-mile times were still in the low-14.60-second range, more than two-tenths quicker than with stock performance settings.

Since the Hyperpac has a dragstrip function that gives all the information you'd get at a dragstrip, we decided to test it against the timers. We found the Hyperpac to be extremely accurate, within a percentage point or two of the track timers. Certainly accurate enough to provide good information for testing parts.

Multiple passes down the track convinced us that the Hyperpac works and works well. The dragstrip function was accurate, fun to play with, and allows for Christmas tree starts from any intersection. The real improvement, however, is performance. Our test vehicle was some four-tenths of a second quicker in the quarter-mile, and the ease of installation was equally impressive.