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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > Secondary cats with Burble Tune
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      10-09-2021, 01:30 PM   #1
kroe
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Question Secondary cats with Burble Tune

Currently running burble tune on my f30 330i with catless DPs and stock exhaust/midpipe. It does have a secondary cat and I am wondering whether running a burble tune is safe for the secondary cat or if it's best to not have the burble tune at all.

I do very much like how the burble sounds right now, since it is subtle and not too aggressive but still is decently burbly.

I am also planning on getting rid of the secondary cats in the future but not necessarily that soon.

Last edited by kroe; 10-09-2021 at 01:43 PM..
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      10-12-2021, 04:35 PM   #2
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Quote:
Originally Posted by kroe View Post
Currently running burble tune on my f30 330i with catless DPs and stock exhaust/midpipe. It does have a secondary cat and I am wondering whether running a burble tune is safe for the secondary cat or if it's best to not have the burble tune at all.

I do very much like how the burble sounds right now, since it is subtle and not too aggressive but still is decently burbly.

I am also planning on getting rid of the secondary cats in the future but not necessarily that soon.
I have the same scenario as you with my 328i LCI, i do have a muffler delete so there is a little less backpressure so i do have a burble tune and its pretty aggressive, (BM3 Aggression 6) as long as you are not abusing it it should be fine. its hard to remove because the pipe is bended in an oval shape so let me know how it goes if you ever do it.
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