I don't think the bi-modal operation is the cause of the extra power...just a freer-flow design overall most likely. I don not think it is possible to report the official power rating from a special drive mode, but in the end, who cares--it's 3 HP.
Again, a total fail if there is actually a bi-modal design, but it is imperceptible to the people in the car! I did report quieter exhaust at idle, so the bi-modal likely lowers the sound in normal use and allows approximately the same as the earlier models in the open position. Lots of sporty cars come with bi-modal exhaust from the factory. None work this way. They are there to allow temporary pleasant/exciting/louder operation without burdening the users with too-loud exhaust the other 95% of the time you are just puttering around. A brilliant engineering development for those who like sporty cars, but are not teenagers trying to get noticed at all times/at any cost.
Again, recall the reviews of the Stinger over the years. One of the most-often repeated complaints was dull, unexciting exhaust. So, just as KIA did the exact opposite of what was requested with the damper settings (and made the two modes even less distinct), they have made the exhaust less sporty overall in the 2022. Mind boggling, really.
Of course, no matter what the difference is between the two modes (dB and flavour), KIA failed anyway by not making the bi-modal exhaust controllable by the driver. Any bi-modal exhaust in a modern car with all the UI capabilities of a Stinger should have OPTIONS for activation:
- Sport mode turns it on
- Option for custom drive mode
- Option for throttle position (i.e., past 2/3rds or some such opens the flaps) not related to drive mode
- Option for engine speed threshold (e.g., above 3500 rpm) not related to drive mode
I wouldn't expect all four choices in every car, but at least two should be there. Given the imperceptibility of the Stinger system, no need to make it controllable by the driver
