Furthur detailed description on the Computech's "Race Air Pro"

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Below is just a summary, but to really appreciate all that the "Race Air Pro" can do, you will need to read about the features below, or you can go directly to the Computech Racing Systems Web Site, and view the entire instruction manual.

2 Dial-In programs -
1. Dial-In, Standard Method.
This program is designed to help class and bracket racers predict an elapsed time (ET) for the next run based on changes in the horsepower correction factor. The Standard Dial-In method is Computech's easiest to use and more accurate ET prediction program.
The correction factor method used can be changed from STD to SAE in the program setup area. The SAE method should produce more consistent results for large barometric pressure changes or different track elevations.
The program works for all length tracks and is compatible for use with either gasoline or methanol fuel. However, a setup fuel choice must be made to get accurate ET predictions. The program will automatically go to the fuel setup program during the first use.
The Dial-In is predicted from 1 previous reference run (no database of runs is used or required). The reference run, on which the prediction is based, is selected by the user. The reference run should be the most recent good full run when the vehicle performed as expected. Runs that had tire spin, unusual 60 ft times, or gusty wind conditions should not be used for the reference run. Change the run used as the reference (old) run as the race day progresses. It is important to use the most recent good full run as the reference. The most recent run will best represent the current traction and weather conditions.

2. Dial-In, Density Altitude Method.
This program is designed to help class and bracket racers predict an elapsed time (ET) for the next run based on changes in the density altitude. This program requires that the Dens Alt Setup function be run for each vehicle so that the program can calculate an elapsed time versus density altitude ratio. The program has memory for 3 different data sets.
The Dial-In is predicted from 3 previous runs that are entered into the computer memory during the Dens Alt Setup program and a recent reference run. The reference run. on which the prediction is based, is selected by the user. The reference run should be the most recent good full run when the vehicle performed as expected. Runs that had tire spin, unusual 60 ft times, or gusty wind conditions should not be used for the reference run. Change the run used as the reference (old) run as the race day progresses. It is important to use the most recent good full run as the reference. The most recent run will best represent the current traction and weather conditions. Since this program utilizes runs from memory, it is compatible with whatever fuel being used.

Throttle-Stop program -
This program is designed to help super class racers predict the throttle stop timer settings for the next run based on changes in the correction factor. The correction factor method used can be changed from STD to SAE in the program setup area. The SAE method should produce more consistent results for large barometric pressure changes or different track elevations. This program requires that the T-Stop Setup function be run for each vehicle or combination so the program can calculate an elapsed time versus throttle stop timer setting ratio. The program has memory for 3 different data sets.
The program works for all length tracks and is compatible for use with either gasoline or methanol fuel. However, a setup fuel choice must be made to get accurate timer predictions. The program will automatically go to the fuel setup program during the first use. The setup function must be redone if you change anything that affects vehicle performance.
The timer setting is predicted from 2 previous runs that are entered into the computer memory during the T-Stop Setup program and a recent reference run. The reference run, on which the prediction is based, is selected by the user. The reference run should be the most recent good full run when the vehicle performed as expected. Runs that had tire spin, unusual 60 ft times, or gusty wind conditions should not be used as the setup runs or the reference run. Change the run used as the reference (old) run as the race day progresses. It is important to use the most recent good full run as the reference. The most recent run will best represent the current traction and weather conditions.

Run Completer - This program will predict what the elapsed time and MPH would have been on a run that was aborted prior to the finish line. In break-out classes it is common practice to lift off of the throttle or to brake the vehicle prior to the finish line in an effort to take only enough win light to get there first and to avoid the possibility of breaking out. This program utilizes the 1000 ft elapsed time, the 1/4 mile elapsed time, the 1/4 mile MPH from a previous full run, and the 1000 ft elapsed time from the aborted run. To use this program for 1/8 mile racing, substitute the 330 ft elapsed time for the 1000 ft elapsed time, the 1/8 mile elapsed time for the 1/4 mile elapsed time, and the 1/8 mile MPH for the 1/4 mile MPH.

Test & Tune -
Holley Jetting -
The Holley Jet change program is designed to work with Holley carburetor jets from #50 through #100. The program utilizes actual jet flows as opposed to drill sizes when making the computations. Use this program with the baseline tune up information to predict the proper jet to use as the ADR changes.

Fuel Injection Jetting -
This program is designed to work with mechanical fuel injection systems. The first time this program is used, all the engine fuel nozzle sizes must be entered in the setup. When the setup is completed the computer will remember the total nozzle area for future calculations. This program and the Fuel Injection, High Speed Bypass Adjust program use the same total nozzle area number from computer memory. Use this program with the baseline tune up information to predict the proper jet to use as the ADR changes.

Precision Jetting -
The Precision Jet program is designed to work with precision drilled/reamed and flowed jets. Hand drilled jets are not accurate enough for precise fuel metering. This program is designed to accept carburetor jet diameter in inches or millimeters. Make sure to enter the decimal point and zeros to denote the diameter dimension. It will work with any fuel. Use this program with the baseline tune up information to predict the proper jet to use as the ADR changes.

Mikuni Jetting -
This program is designed to accept Mikuni carburetor jet numbers. Use this program with the baseline tune up information to predict the proper jet to use as the ADR changes.

Keihin Jetting -
This program is designed to accept Keihin carburetor jet numbers. Use this program with the baseline tune up information to predict the proper jet to use as the ADR changes.

Chassis Set-Up -
By percent or weight. This program computes the static weight to expect at each wheel of a vehicle for a given chassis setup based on the total vehicle weight, the desired left side weight distribution percentage, the desired rear weight distribution percentage, and the desired right front to left rear diagonal weight distribution percentage.

More Programs Coming!

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