Stock downpipe?
I can't speak for other setups, but I can say that the AA downpipe + HKS Super Turbo catback has zero drone in normal mode at any speed. In sport mode there is some drone right at 2k RPM, but above and below that is fine, or you can switch to normal mode and it disappears.
Big difference with it in comfort v sport mode? It has an awesome sound from the videos, but I do really want something more quiet in Comfort and then to be LOUD in sport. Thanks!
Sound clip please
Any exhaust clips? Good to hear it isn’t too loud in comfort and wakes up in sport!
There’s a pretty big difference. It’s a pretty great system to have on a daily and is very livable. Like I mentioned it does start to drone at higher speeds but it’s perfect for every day commuting at 55-85ish mph. Only problem you might have is getting the fitment aligned perfectly so it’s not vibrating against anything under the car. The system has guide holes for you to line up but even then you may find that you have to do some adjusting. Don’t forget to check it again after the first heat cycle to readjust anything that may have shifted.
Thank you! May be ordering the catback to go with the AA Downpipe here shortly and this is on the list with the AWE touring. Having a lot of trouble deciding between the two!
I was between the AA and AWE as well. I chose the AA because I wanted to keep the valve so my neighbors don’t get mad when I have to get up early and I don’t attract so much attention from law enforcement, AA is very well known in the BMW world for quality, it isn’t as bulky so it doesn’t reduce ride height as much, and according to my mechanic it’s “10x” easier to align than AWE. Also helps that AA is within driving distance of me so once they finished making it I just picked it up and got it installed later that day.
