[feng]

Hi all

I'm looking to put a HF catted downpipe on my F31. Just wondering if there is anyone in Bris with a x28i F31 or a 4 series GC who has changed to a Hf catted DP with possibly a m performance exhaust?

Long shot.

Failing that, an 328i F30?

Just want to hear volume when cruising and listening for drone as well as idle volumes.

Ta.

[Who?]

I had the 335i mpe and a Wagner catted on my 328i, i had drone at 60 and 100kph cruising

Had to get rid of it caus the missus hated it

[feng]

Originally Posted by Who?

I had the 335i mpe and a Wagner catted on my 328i, i had drone at 60 and 100kph cruising

Had to get rid of it caus the missus hated it

oh wow drone at 60? Did you have drone without the DP or was the drone primarily coming from the MPE?

I currently also have the 335 MPE and when i had the flaps open, it was a bit droney at those speeds too (i originally tied them open). Looking to code it to only open in Sports/Sports+ now via BM3. That way if she drives it, it'll be in comfort anyway

Also, what was your midpipe section? I still have my stock 2.75" midpipe and resonator from the 328i.

[x328x]

wow

i had a catless wagner and remus 335i exhaust and had no drone

[Who?]

Originally Posted by feng

oh wow drone at 60? Did you have drone without the DP or was the drone primarily coming from the MPE?

I currently also have the 335 MPE and when i had the flaps open, it was a bit droney at those speeds too (i originally tied them open). Looking to code it to only open in Sports/Sports+ now via BM3. That way if she drives it, it'll be in comfort anyway

Also, what was your midpipe section? I still have my stock 2.75" midpipe and resonator from the 328i.

Yeah, it was only noticeable during constant cruising though, I also had the resonators taken out

[feng]

Just rebumping this thread, but is there anyone in Bris with a 328i and a catted downpipe that could take me for a drive? With an MPE would be a bonus . F31, added bonus

I think third party exhausts may sway the results.