Hi my fellow brothers, I have finally install my remus quads, but like others have complained, is not loud at all, my question is, how to remove the resonator, is it a easy DIY or it has to be done by the shop?????

You might need a shop to remove it, unless you have all the tools and materials in your garage.

if and when you do it, please make a before and after sound clip, im interested in remus quad exhausts since they dont involve cutting anything, but i want that noise too

It does involve cutting off the OEM muffler!
Member sylver has made a youtube clip of the quad on his 530i:

is it also OK to remove stock resonator?

I mean if you have to start cutting parts of the muffler, this process probably isn't reversible I assume. What happens if you find out the noise level is not bare able to your liking, then what? I'm asking because I'm sure one day, this will be my project.

Unless you have some sort of hearing problem you will NOT like the result of this. The outside of the car will sound amazing...but inside it will sound you have an elf buzzing in your ear every time you accelerate and it will drive you crazy. I just put all my resonators back on and am running the same remus quad set up you are, although mine is a v8.

Let me know how it turns out

Jake

+1 I just left all my resonators in place... sounds great outside, no droning inside.

I have decided not to remove the resonator, after driving my baby around, I actually like how it sound, It is a lexury car, not a race car, so I am keeping it just how it was made. by the way, I love this remus, thanks to RemusExhaustShop. They made this happen.......