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TB993tt said:... In which case the statement that the over-boost activates for 10 seconds is untrue
You guys are reading way too much into this topic, and READING WAY TOO LITTLE of the ACTUAL INFORMATION available.
The over-boost function has a MAXIMUM CONTINUOUS duration of 10 seconds. If interrupted by a shift (or other throttle lift), the timer is reset for another 10 seconds.
The over-boost function only works in the RPM ranges shown on the torque vs. engine speed graphs posted to numerous other threads. The over-boost NEVER works at 7000 RPM because it was never designed to do so.
BOTH of these (RPM and duration) limits/restrictions are in effect simultaneously!
Just because the engine has revved from 1500 to 7000 RPM in less than 10 seconds DOES NOT MEAN that the over-boost is present at 7000 RPM. This fact does not connote a lie on Porsche's part, but a failure of some wishful thinkers to understand the nature of what is being specified.
The easiest way to see the effect of the over-boost limitation is to force 6th gear and accelerate from 2000 RPM up a long (over 10 seconds) hill and see how long the increased boost lasts.
One will only discover a limit if the actual triggering events for the limitation are experienced. I.E.: one has to have 10 seconds elapse during which the engine is continuously operating at full throttle in the RPM range wherein the over-boost function has an effect on boost pressure.
This is probably a difficult to generate event in actual operation, unless an up-hill autobahn section is clear of traffic and one simply presses down on the throttle while holding in top gear.