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Old 05-29-2023, 09:51 PM   #21 (permalink)
Isaac Zachary
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 2,083

Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
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Quote:
Originally Posted by cRiPpLe_rOoStEr View Post
Most likely it will be locked or unlocked on-demand, yet I'm not so sure.
I found this article:

https://www.thedrive.com/news/45026/...-exhaust-pipes

Quote:
"Above a certain engine rpm, there is a valve. So they open that and it goes straight to the outside of the car, which reduces the backpressure and achieves the 300 horsepower."

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