City driving C450 custom exhaust

Cruising around in the city to record some interior sounds of the exhaust sounds. Compared to the complete stock exhaust, there's more to be heard at lower RPM. There's no drone that rattles anything inside the car, but there's definitely more sound. While at a constant cruise both in the city or highway the exhaust is quiet.
00:00 Comfort mode starting while parked
03:30 Sport+ mode
06:17 Comfort again
Please try to ignore the creaking/rattling of my interior panels :)
.... I'm planning to hunt down and fix all rattles soon enough. It got worse after my recent lowering spring install and the roads in my city are bumpy.

[@Dozithekid]

What exactly did you do to the mufflers to have no drone? And did you make the entire exhaust a dual exhaust instead of the single pipe exhaust as stock?

[@chrisc8089]

Yes the stock Y pipe was removed and thrown away. I had the shop make a custom dual middle pipe that connects to the stock mufflers (which were cut open and the piping inside modified). I Also have the C43 Performance Exhaust resonator on my midpipe and an x-pipe. I've got a few other videos I've uploaded you can check out as well. For details on the configuration and more sound clips, please see the forum post on the muffler mod here: mbworld.org/forums/c450-c43-amg/792098-bmw-mod-opened-up-my-c43-mufflers-semi-straight-pipe-w-pics.html My screen name on the forum is BayAreaAMG. You can check out my pictures and progress there .

[@colestrumpf]

no drone at all? no low buzzing or anything? wow

[@chrisc8089]

Yes no drone. The exhaust is a bit louder in comfort mode so there's a slightly noticeable increase to lower frequency sound inside the cabin. But there's no annoying drone - this is the perfect setup imo. I'm still waiting to see more feedback from people with the LEM preforms exhaust replica though, they look good but I'm sure they drone with valves open. I'm also planning to install catted downpipes as well and I'll see how it affects everything. I previously installed C63s PE mufflers on this same middle pipe setup and it droned so badly I couldn't stand it. Cruising in the city or highway, it was so loud and rattling the cupholder. Had to keep the radio volume higher to hear it, very annoying lol.

[@colestrumpf]

just put the PE midpipe on my car and connected the stock sport mufflers. hopefully whenever i do this muffler hack. it will sound just like the PE. right now i’m very close, i can tell that i just need to open up the muffler a bit to be able to fully hear its soul

[@chrisc8089]

@@colestrumpf it will have a similar but different sound, it will sound great!

[@logosengineeringmotorworks2832]

@@chrisc8089 you rang?..LOL. We have V2 completed of our Performance exhaust replica. It has a resonator (we cut open the OEM PE resonator to use as a benchmark) and the drone is comparable to a OEM PE with valves fully open in comfort mode (this is the benchmark we aimed for). send us an email for pics.

[@chrisc8089]

@@logosengineeringmotorworks2832 oh really ok, that sounds more like what I'd be interested in. A nice refined tame sound without too much drone , if at all. However I'm happy with my current exhaust, but I'm sure others will be very interested as well. We all want to see more proper drive videos, including WOT and cruising. It's hard to make a decision without hearing it properly with stock downpipes for comparison. I am however still looking to get an intercooler sometime by summer