Only the door. The rear speakers are junk. Which is why I use the settings to fade more to the front. I adjust so that the door speakers do the most sound. they sound way better than the stock speakers. I use the bass enhancement as well that is in the sound settings. If you adjust correctly the...
Installed these sound improvement Significant change , tune with the equalizer. I don't need the subwoofer ,they sound that good. They are the door speakers.
https://www.amazon.com/dp/B0BH56NGBV?ref=ppx_yo2ov_dt_b_fed_asin_title
I found this article on the internet. Credit to Author: Landon Thistletown from an article on Bike and Car Styling Protector.
https://bikeprotector.co.uk/are-k-n-air-filters-bad-for-maf-sensors-the-surprisingly-honest-truth
I installed KN filters in my new 2025 Z and noticed that there is "more" black smoke stains on the exhaust tips. I ran the car with stock air cleaners and very little black stains. Put the KN's back and this is what I get. Any ideas?