Loud Exhaust

[dado]

Five months ago I installed B&B tri flo exhaust on my 2003 325i. First 3 to 4 months sounded great, then I installed K&N cold air filter and exhaust became louder. I replaced K&N with the origin filter. Exhaust sound did not get better, it’s getting louder and louder and my car is shaking when I accelerate on the low speed, pretty annoying. I heard that they get louder after some time, but mine is too loud.
Does anyone have same problem?
I am thinking to put back origin exhaust.

[GRD-4-3L]

My Civic's muffler progressively got louder when a leak in muffler was getting bigger. It sounds pretty good until you go on highway and the constant 'BBbbhhhhmmmmm' drives you nuts.

There could be hole or loose connection in your exhaust.

[Eggrolled211]

BB tri flow....is just loud in general from what I've reasearched. I have uuc tse slightly loud on acceleration and under 2k rpm. above that it pretty quiet....like I didn't have much of a exhaust.....I would have gotten an Active Autowerks instead if I were you...they aren't very loud.......just my 2 penni

[dado]

Yeah. I heard Remus is quite too. I will keep my BB for now as i am going to change my car at the beginning of next year. I am kind a happy now after hearing friends Borla exhaust on 325. It's ridiculously loud.

[97alpineM3]

I have Borla... its not too loud.. unless you press on the gas... at idel... it purrs... its just right... for my standards.... but performance... I'm about to upgrade to a track pipe.... hehe

[Mr White G]

Check that the brackets are tight and the pipe isn't shaking, and then check the gaskets at the pipe joins to ensure they're not leaking.