Originally Posted by Schnave

Thanks 4AEP. I Googled “Cayenne Turbo overboost” and, indeed, found a couple sites that referenced the overboost:

https://www.automobilemag.com/news/2...w-first-drive/

https://www.guideautoweb.com/en/gall...-cayenne/?im=8

Originally Posted by Schnave

Thanks 4AEP. I Googled “Cayenne Turbo overboost” and, indeed, found a couple sites that referenced the overboost ( see below). However, they provided no reference for their claims. For me, the jury is still out until I can find more technical details or prove it myself.

My previous “seat of the pants” tests showed no improvement in acceleration but did show an aggressive transmission map over and above the Sport+. Chris may be on to something regarding the transmission downshifting as if you had WOT even when you have throttle set at less than wide open. I observed this in my test described in earlier post.

Another thread mentioned the Dragy GPS performance meter seen here: http://www.godragy.com/. I’m considering purchasing this and conducting acceleration tests to prove or disclaim this once and for all. I’ll be sure to post my results to this thread.

Here are links to those overboost references:

https://www.automobilemag.com/news/2...w-first-drive/

https://www.guideautoweb.com/en/gall...-cayenne/?im=8