OEM's typically limit the bass response of their systems so there is zero chance of a customer blowing the speakers/subs during the warranty period. The more you turn up the volume the more they attenuate those lower frequencies. Doesn't surprise me you've noticed a big improvement. :thumbup:

I see Avin has used your video in their website for E53 installs. Well done! :thumbup:

Thanks. The more info out there the better. Wish I could edit some of the info in about the rear camera auto switching via the canbus and being able to power it directly via the head unit cam +12v wire... but what are you going to do. :dunno:

Think I'll add the info in the description though. Couldn't hurt.

Good job Joe! We're gonna have to make some time for the e70 now. Man was life so much simpler 20 years ago.....poorer.....but simpler.

Much poorer. But much simpler. "Memories, misty water colored memories..." :D

Can't wait for the kids to get older... and be able to hold a wrench. :rofl:

That's why they make velcro gloves, no need to wait more years for the kids to help[emoji38]

Sent from my SM-A730F using Tapatalk

So a couple of weeks with the Avant-4 and wanted to put my review in. Mostly working really good, audio is fine and better than original OEM Business CD with mid. There are a few things I didn't understand and I am learning the Android system as I go.

What happened this week was the internal microphone seemed to have failed. It seems to be a common failure on these Chinese units somewhere in the solder joints. Complete static and very low volume on the receiving end of my phone calls. Annoying but took it all back apart and fitted an external microphone up in the alarm ultrasonic panel and that solved that problem.

Second failure was the iGo offline navigation maps app which I paid $50 for when ordering. It worked fine for the first 2 weeks but now when launching the app it gives me a out of memory error and I tried clearing data and cache with no results. I uninstalled the app and reinstalled it also with no results.

I contacted AVIN and got a pretty quick reply asking me to uninstall the app and reinstall it. I replied to their email that I had tried their recommendation and even sent the picture below to them but now has been several days with no response. I believe the SD card gave up and even suggested that to AVIN in my email but not a word from them.

We will see where this goes but for now I am less than satisfied with the support from AVIN. I guess this is common on the Chinese systems but I chose AVIN because of the USA support side but I guess it really does not matter in the end. The support is nearly non-existent from AVIN.

^Bummer. Agreed though. With android units... support is fairly non-existent in any traditional capacity and quality.

For offline GPS I use GoogleMaps. Seems to work just fine around town. I don't always hotspot to the car so it is using offline maps and it has not lost me anywhere in town as of yet. Just throwing another option out.

I use always use hot spot as well so not an issue for me, however, I am still working a few bugs with USB connectivity as well as dash cam issues. Speed is def faster with the Avant 4 compared to Avant 2, but previous unit was much better out of the box compared to the newer unit. Hoping an update will launch soon.

I am also using Google Maps with offline maps currently and is working fine until AVIN sorts out my issues or refunds me my money for the iGo maps option they sold me. Agreed, all these Android aftermarket head units are pathetic on support, AVIN is no different. I was hoping they would have been better.

All 3 of my USB devices seem to work correctly. I added the USB Aux 3RCA to my 3rd remaining USB connection mounted in the original cigarette lighter receptacle in the center console. The RCA video and audio jacks plug into AV IN and I tested it with audio only from my iPad and works great. I still need to find a device that sends audio and video over a 3.5mm jack to test the video. At least the AVIN button does something now. The USB cable just plugged into the last remaining USB cable from my head unit and is used for simple phone charging while in the car. I could plug in a USB thumbdrive into that port for some temporary media I guess. (Don't mind the debris, I took the shot before I cleaned it up)

https://avinusa.com/media/catalog/pr...sbaux-3rca.jpg

I had to take everything back apart again to add the external microphone and route the wires correctly (pull the Avant-4, pull the glovebox, remove the A pillar cover and take apart the overhead console) but it came out good and probably has better quality than the internal microphone so I guess the internal microphone failure may have forced me to do it right after all. (at least Google Assistant and my phone calls can understand me now) I didn't want to remove the factory microphone in case I toss this thing in the rubbish can and go back to stock so I put the microphone in the alarm ultrasonic cover between the module and the grill and drilled 3 small holes in the cover.