How does the pop and crackle of PSE work?
#1
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I did a search and did not come up with any answers and the function of the exhaust intrigues me.
Econ mode w/PSE ON - fuller exhaust note w/o pop and crackle![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Sport and Sport + w/ PSE ON fuller exhaust note with all the pop can crackle you can handle![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
So what makes the pop and crackle happen?
Fuel dump?
Exhaust valve remap allowing then to stay open longer?
Econ mode w/PSE ON - fuller exhaust note w/o pop and crackle
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Sport and Sport + w/ PSE ON fuller exhaust note with all the pop can crackle you can handle
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
So what makes the pop and crackle happen?
Fuel dump?
Exhaust valve remap allowing then to stay open longer?
#7
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Yes, over fueling.
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#10
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#12
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Ditto! My recent cars included and E90 M3, and E70 X5M, so this car is an upgrade in the fuel economy department. I need my crackle, and pop!
#14
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