Did you use the supplied harness/connector for the signal to the sub? Or, if not, where did you tap for the signal?
Edit: it looks like this is the complete drop-in subwoofer replacement and includes the adapter for my '20. If anyone knows of any issues with this, please chime in...
Interesting. I haven't even tried to isolate it or trace it down because I usually don't hear it with my fan speed up or audio on. I'll try recirc with low fan speed and see what mine does.
I have a slight rattle sound coming from the area of the center vents at low fan speed. I don't hear it at higher fan speeds. It's probably still there, just not audible over the sound of higher fan speeds.
This has been my go-to for decades. No going into the cabin for bleeding.
https://www.amazon.com/MV8000-Automotive-Tune-up-Brake-Bleeding/dp/B00265M9SS/ref=sr_1_6?crid=1HM3LFPSREMH3&keywords=mityvac&qid=1691592044&sprefix=mityvac%2Caps%2C267&sr=8-6
Recently, my third service (I do my own) was A 1 2 7... around 25,000 miles. Replace engine oil / rotate tires / air + cabin filter & inspect drive belt / replace brake fluid.
I've done the oil and oil filter, still need to do the air filters and brake fluid.
Do any of you that do your own maintenance actually do this?
2020 Si with less than 21,000 miles, and completely replacing brake fluid at this mileage seems a waste. In fact, I've never completely REPLACED ALL the brake fluid in ANY vehicle; always just topped off after pad and/or rotor...
I ordered these from hondapartsnow.com to have extras.
(need 6) Quarter turn fastener: PIN, ENGINE COVER 90674-TY2-A01
(need 2) Front screws: BOLT, COVER 90105-TBA-A00
From my experience, you're more likely to lose one of the front screws than the quarter-turn fasteners.