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Registered
Join Date: Apr 2002
Location: Santa Clara, CA
Posts: 5,668
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With respect to the need for trans mods, we have total control of torque delivery. This provides great flexibility with respect to the trans, CV joints, clutch etc. We can program to work with the stock trans without problems.
On the air cooled cars, there are a variety of trans options; G50, 915, 911, 901, 930 each with different torque handling capacities. We can program the system to accommodate each.
We constantly monitor a variety of inputs including gear selection, RPM, and throttle position. Our VCU combines these inputs with knowledge of the trans and engine capability to make decisions about how much torque to produce at any given time. We can limit torque to remain within the operating limits of the drive train
As a simplified example we can limit torque based on gear selection; 1st is limited to 50 ft lbs added, 2nd gets 100 ft lbs, 3rd+ let her rip, etc.
But it gets more sophisticated than that, we can torque-fill. The engine has a torque curve that climbs, then dips with RPM. We can map to add more torque when engine torque is low and less torque when engine torque is high, thus creating a flattened torque curve from idle to redline. We can set that summated flat torque curve to remain within the operating limits of the drive train, and elevate it if the trans has been modded to accommodate more.
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Chuck Moreland - elephantracing.com - vonnen.com
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