[BD_F22]

I recently installed the hpf gen 2 exhaust and am loving it however in about 3 weeks after installed I find myself with a collapsed cat.. my shop told me im better off with catless dp's but I have read that with hpf exhaust+catless dp's you basically need ear plugs for the highway.. my question is should i just change exhaust and avoid the headache or is there a way to add a second resonator to the exhaust and mellow out the sound.. any advice or help will be greatly appreciated

[AK 335i]

collapsed cat? clogged ? ... they make high flow catted dps, search for that. or yeah put in catless dps and if it's "too loud" which it shouldn't be, any good exhaust shop or welder can add in a resonator or 2 or whatever you want

[Beemw335]

Go in the for sale section
People are selling their stock downpipes for cheap.

[BD_F22]

Originally Posted by AK 335i

collapsed cat? clogged ? ... they make high flow catted dps, search for that. or yeah put in catless dps and if it's "too loud" which it shouldn't be, any good exhaust shop or welder can add in a resonator or 2 or whatever you want

Thanks for the reply and i dont mean loud on the outside but i hear it can become somewhat unbearable in the cabin will definitely talk to my shop and map out a plan

[BD_F22]

Originally Posted by Beemw335

Go in the for sale section
People are selling their stock downpipes for cheap.

Definitely did not think of that one.. Thanks!