thefleet

Hi guys,

Is there a breakin period for aftermarket exhausts? I just got my Eisenmann Race installed and there is only a slight hum at 1000 rpm. Then it goes away.

I just drove 70 miles on it only.

info@trinityautosport

take out the rectangular middle resonator. that's what I did on mine after a while.

and for even more sound, get the AFE intake as well when it comes out for your car

thefleet

Thanks bud.

When you take out the resanator, does it sound too loud? Do you have any matching clip from youtube I can get an idea from?

info@trinityautosport

wasn't too loud after removing the resonator in my opinion, but deeper for sure.

delje08

Here is a youtube clip of my eisenmann race on a 545i.

Square resonator was removed.

You would have to drive it for awhile before it gets any louder.

s4iscool

Most exhausts get louder over time as the packing loosens up.

thefleet

Thanks guys. What packing would be inside an exhaust.. please educate me here.

Delje08: Nice video. Did yours also just had a hum at 1K rpm and then later became louder? Mine basically looses any sound after 2K rpm. I thought it would get louder as I drove faster?

Hyper_545i

+1 on the above comments. Give your exhaust some time to "break in" before making any changes. I would also recommend removing the square resonator. But let the exhaust break in and then make your own decision as to whether or not you want it louder. If so, you can always remvoe the above mentioned resontator.

thefleet

My question is (or confusion), why should I remove a resenator? If I had to do that to get a good sound, I could had removed them with stock exhaust as well?

westside

I didnt have to break mine in