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Car tuning software for PC


Vi-PEC's PC tuning software, VTS, includes QuickTune which allows for rapid, hands-free tuning on the dyno giving a high precision result.

The QuickTune feature is available for the Vi-PEC V44 and V88 model ECUs.

QuickTune will tune the engine with no input from the operator. The closed loop air fuel ratio table is used as the target air fuel ratio table for the QuickTune software. This table is setup with the required air fuel ratios at various RPM and Load points.

An exhaust gas analyzer or any other analyzer that provides a 0 to 5volt "corrected" output, is connected to any of the Analog inputs, this is used as the actual air fuel ratio input. As the engine is run through its various RPM and Load points the software will adjust the volumetric efficiency numbers in the main fuel table to achieve the target air fuel ratio.

At no time do you need to touch the keyboard on the Laptop.

After the tuning is complete the analyzer and 02 sensor are no longer needed. At any time after tuning is finished the values in the target closed loop table can be changed, and the engine will automatically run the new air fuel ratio, providing you do not make a change to the volumetric efficiency of the engine, e.g. fit a different camshaft, modify cylinder head etc...

If the engine is modified so the volumetric efficiency changes, then the analyzer and QuickTune software feature will be required again to re-tune the engine.

QuickTune software is much faster then a good operator. It is not possible to manually tune as quick as the QuickTune. A typical engine will take less than 20 minutes to fully map on an engine dyno.

Accuracy from 0.5% to 5.0% can be setup in the QuickTune software. The default value is 2% accuracy which is generally a lot more accurate then most tuners achieve manually tuning engines.

QuickTune features TuneAhead which tunes cells around the site being tuned. This speeds up tuning when surrounding cells have values that are not close.

You cannot directly connect a 02 sensor to the ECU to QuickTune.

Overview

Vi-PEC QuickTune software provides rapid hands-free tuning of Engine Air/Fuel mixtures. This automated operation frees the engine tuner, allowing total concentration on safe engine/dyno operation. On road tuning of motor vehicles is even possible.

This software uses a complex combination of math, including statistics, trigonometry and fuzzy logic to intelligently adjust the fuel delivery tables. Initial tuning is rapid usually occurring within 1 second. High precision can be achieved by allowing the QuickTune to operate for an extended time at each engine operating point. The operator has control over the balance between tuning speed and accuracy. Accuracy is ultimately limited by the accuracy of the attached Air/Fuel ratio measurement equipment.

The program provides visual indication of the tune status. Automatic and manual storage of tune status allows the user to monitor the tuning progress even if undertaken in several sessions. Tuning usually proceeds 2 to 5 times faster than possible by manual means. Fuel savings of as much at 90% have been reported. The considerable savings in engine life are obvious.



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