In an effort to more conveniently and more efficiently put Mikey's various fuel injection tuning certifications and skills to use, ProFunction Automotive has acquired an in-house Dyno Dynamics dynamometer and is now scheduling tuning appointments.

Why be tuned on a Dyno Dynamics dynamometer?
ProFunction chose a dyno dynamics dynamometer over the "traditional" Dynojet for a number of reasons. The first being accuracy. A Dynojet is an inertia dyno which means it calculates torque and horsepower by accelerating a large roller of a known mass. By measuring the time it takes to accelerate the mass, the computer calculates torque and horsepower. A true inertia roller dyno designed to give accurate readings would have a roller with the same mass as the vehicle. In order to be accurate, that would require changing out the roller for each vehicle that came on the dyno. Instead a dynojet utilizes one roller and uses a universal formula to calculate horsepower and torque. Because of the single heavy roller used to simulate the inertia of the car being tested, it is hard to monitor minor changes in power. The large mass of the rollers result in very minor changes in roller speed that inertia dyno sensors have a hard time picking up. If the sensor and computer don't see the change in roller speed the the dyno graph will not show a dip in power.



ProFunction's Dyno Dynamics dynamometer uses rollers with very little mass and directly measures power rather than calculating it. Quick drops in power will be picked up by the load sensor and will show on the dyno graph. This is very useful for finding problems and ensuring that your engine is running correctly. It does this by using eddy current generators to resist to the torque produced by the wheels. Because it can accurately measure the current used to hold the torque produced by the wheels, it can accurately measure torque. There is no calculation, there is no universal formula! <u>The torque generated in resistance of the roller is what the vehicle produces.</u>



<u>Additional Key Features:</u>
- Full controllable load control. Can be set by speed or RPM: Used to simulate road conditions. Load can be increased to simulate driving up a hill. The advantage is that the dyno is able to simulate road conditions in a safe environment while allowing the technician to monitor the car and it's engine.
- Real-Time Torque and Horsepower Readouts: Ideal for accurate tuning at all areas of your map.
- Fully Portable Unit: Allows the operator to tune anywhere, anytime.
- Designed to prevent tires from slipping on High Horsepower cars: On a Dynojet, if tires are spinning on the dyno, that indicates that more torque is being produced than is being recorded by the Dyno. Because the Dyno Dynamics unit directly measures power, it eliminates wheel spin and produces accurate numbers.
- Built in map sensor for boost plotting and a high speed accurate Wideband.
- Fully compatible with just about anything with wheels: See below.
- Bi-Directional independent rollers for drivetrain versatility.
- RPM pickup can be done by ignition, vehicle ecu, injector pulse, roller speed, or optical pickup.



So. To recap, or for those who did not read though anything of what i just typed, the dyno is here, it's setup, and it's calling.

To setup an appointment, inquire on rates, or discuss how ProFunction can get the most out of your vehicle, call the shop. (847) 895-9520.

Ricky


Modified by OnePointFive at 12:19 AM 4/7/2008