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      09-24-2009, 10:49 AM   #98
ezatnova
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Drives: C63 AMG
Join Date: Jan 2006
Location: West Chester, PA

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Quote:
Originally Posted by Mike@N54Tuning.com View Post
If the DME boost is below the target boost, and the gas pedal is pushed in 100%, the throttle is 100% open until close to redline. When you detect a reduction in the rate of change of RPM AND the gas pedal value drops, a manual shift is taking place.
Mike...I'm missing something simple here, I think.

Given your statement above, in the bolded part, how is it necessarily true that a shift is taking place? If you are 100% throttle, then wouldn't simply lifting off to slow down (not shift) also mean a "rate of change in RPM AND the gas pedal value dropping"?

What is stopping the JB3 from saying "oh, the car is shifting, I'd better maintain boost" when the driver is simply lifting off of the throttle to slow down. I must be missing something. I would think it would be quite detrimental to have the car keep boosting after the driver gets off the gas, when he just wants to slow down.

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