Hi Tony,
Dyno testing / setting of the VEC1 is not necessary unless you want to maximize the settings (get the last HP or two). Settings are generally the same for cars with similar mods (or stock), but vary slightly by year. The tuning page in the manual goes into complete detail on how to adjust.
The VEC1 Viper Engine Calibrator provides adjustment of the air/fuel ratio and ignition timing over the entire operating range of the engine. The adjustments can be made by the driver "on the fly" to optimize engine tuning. Adjustments are generally not needed after the initial setup. It is especially useful for recalibration of stock Vipers and those with modified engines, intake or exhaust systems. As you upgrade your engine, you can continue to tune it for optimum power.
Powertrain Control Modules (PCM's) are preprogrammed to run an engine at a specific air/fuel ratio and timing advance based on the load the engine is under. With the calibrator, you can alter the load calibration the PCM is using to increase power and throttle response.
At low, part throttle loads, a stock Viper PCM typically runs the engine at 45 degrees timing advance and a very lean mixture. By altering the load calibration of the PCM to a positive setting, we can give the engine more fuel and reduce the excessive spark advance. This yields noticeably improved part throttle torque and throttle response over the stock calibration.
At full throttle, heavy loads, the stock Viper PCM typically runs the engine at 18 degrees timing advance and an excessively rich fuel mixture of 11.0:1. By adjusting the load calibration of the PCM to a negative setting, we can increase the spark advance to 30 degrees and reduce the excessive fuel mixture for dramatically improved full throttle power. The engine will pull harder at higher RPM's because of the increased spark advance and proper air/fuel mixture. Additionally, an increase in fuel economy is generally noted by all users after the calibrator has been installed and tuned in.
The adjustments on the calibrator consist of one low load and one high load adjustment knob. Each is altering the load calibration (air / fuel ratio and spark advance together) in it's respective load range.
It works well. 30 day money back guarantee gives people time to try it out and see if it works for them.
Sean