Catless Downpipe Better With Muffler Delete or Res Delete

sard_f30 · 04-28-2021, 10:48 PM

I just got a catless downpipe installed on my f30 330i and I have stage 1 bootmod and the pops aren't as loud as i want them to be, should i get a resonator delete or muffler delete to make them more obnoxious.

MidMoF30 · 04-29-2021, 07:05 AM

I have a muffler delete (3" all the way) with the stock res. Definitely will be loud if you crank up the aggressiveness. I have mine at no higher than 3, but did have it around 7 for a short while. If you want the bangs/gunshots/explosions you'd definitely have it.

mike@x-ph.com · 04-29-2021, 09:05 AM

in my opinion both options are obnoxious, i recommend you get an real muffler instead

jtalweezy · 04-29-2021, 09:48 AM

Full exhaust, secondary deletes, and catless are the way to go. Valvetronic if you want to be able to put the car in neighbor friendly mode.

I posted the video in a few threads. Here it is in this one: https://f30.bimmerpost.com/forums/sh....php?t=1676076

sard_f30 · 04-29-2021, 12:14 PM

Quote:

Originally Posted by jtalweezy

Full exhaust, secondary deletes, and catless are the way to go. Valvetronic if you want to be able to put the car in neighbor friendly mode.

I posted the video in a few threads. Here it is in this one: https://f30.bimmerpost.com/forums/sh....php?t=1676076

do you know if the secondary cat delete will make a big difference ?

sard_f30 · 04-29-2021, 12:16 PM

Quote:

Originally Posted by MidMoF30

I have a muffler delete (3" all the way) with the stock res. Definitely will be loud if you crank up the aggressiveness. I have mine at no higher than 3, but did have it around 7 for a short while. If you want the bangs/gunshots/explosions you'd definitely have it.

i have my aggression at 12 😃 but i still am not getting gunshots with the current setup. I think i have to look into getting that muffler deleted 👍

MidMoF30 · 04-29-2021, 02:19 PM

Quote:

Originally Posted by sard_f30

i have my aggression at 12 😃 but i still am not getting gunshots with the current setup. I think i have to look into getting that muffler deleted 👍

Are you catless? If you are it should be extremely loud, if not, your cat is most likely muffling this.

I will be going to an axel back shortly once the Megan is released through X-PH to go to dual tips. Too loud for me with the current setup especially from 2000-2500 RPMs.

sard_f30 · 04-29-2021, 04:28 PM

Quote:

Originally Posted by MidMoF30

Quote:

Originally Posted by sard_f30

i have my aggression at 12 😃 but i still am not getting gunshots with the current setup. I think i have to look into getting that muffler deleted 👍

Are you catless? If you are it should be extremely loud, if not, your cat is most likely muffling this.

I will be going to an axel back shortly once the Megan is released through X-PH to go to dual tips. Too loud for me with the current setup especially from 2000-2500 RPMs.

yea rn all i have is a catless downpipe and i have secondary cats

MidMoF30 · 04-30-2021, 12:58 PM

Quote:

Originally Posted by sard_f30

yea rn all i have is a catless downpipe and i have secondary cats

I would say your secondary cat is reducing the noise and/or your Active Sound settings through BM3 may be disabled.

sqwinny · 05-01-2021, 05:08 PM

If you want it to be the loudest possible, you are going to have to straight pipe it all the way back after the downpipe. Any muffler shop can do this for you. They will straight pipe the secondary cat + resonator + no more muffler.

Otherwise you can get a cat back exhaust that doesn't have a resonator in it and you'll do the same but a tad quieter.

jcdub · 05-05-2021, 04:56 AM

Consider a catless DP with a silencer. I've got one from RM motors. It's much quieter than the standard catless DP

jtalweezy · 06-01-2021, 01:41 PM

Quote:

Originally Posted by sard_f30

do you know if the secondary cat delete will make a big difference ?

It definitely does. That secondary cat is still a cat and will muffle the pops and crackles.

FI posted my video to their youtube. XD

04-28-2021, 10:48 PM	#1
sard_f30 New Member 1 Rep 7 Posts Drives: 2017 BMW 330i Join Date: Apr 2021 Location: Newport Beach, CA iTrader: (0)	Catless Downpipe Better With Muffler Delete or Res Delete I just got a catless downpipe installed on my f30 330i and I have stage 1 bootmod and the pops aren't as loud as i want them to be, should i get a resonator delete or muffler delete to make them more obnoxious.
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04-29-2021, 07:05 AM	#2
MidMoF30 Private First Class 37 Rep 100 Posts Drives: F30 328i BMW Join Date: Aug 2019 Location: Massachusetts iTrader: (0) Garage List 2013 328i XDrive [0.00]	I have a muffler delete (3" all the way) with the stock res. Definitely will be loud if you crank up the aggressiveness. I have mine at no higher than 3, but did have it around 7 for a short while. If you want the bangs/gunshots/explosions you'd definitely have it.
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04-29-2021, 09:05 AM	#3
mike@x-ph.com BimmerPost Supporting Vendor 24095 Rep 190,633 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	in my opinion both options are obnoxious, i recommend you get an real muffler instead __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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04-29-2021, 09:48 AM	#4
jtalweezy Private 38 Rep 73 Posts Drives: 2017 BMW 330i xdrive (B46) Join Date: Oct 2020 Location: Shelton, CT iTrader: (0)	Full exhaust, secondary deletes, and catless are the way to go. Valvetronic if you want to be able to put the car in neighbor friendly mode. I posted the video in a few threads. Here it is in this one: https://f30.bimmerpost.com/forums/sh....php?t=1676076 __________________ 2017 BMW 330ix MSport Estoril Blue - B46, ER Catless DP, ER Chargepipe, FTP Intake Charge Pipe, BMS Cone Intake, BMS OilCC, Bm3 Stage 2. FI Exhaust, xHP Stage 3 OTS Transmission tune. CSFRace heat exchanger. Performance M Brake kit. AFE Carbon Fiber D.A.S. https://www.instagram.com/bfourtysick/
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05-01-2021, 05:08 PM	#10
sqwinny Major 467 Rep 1,055 Posts Drives: 2013 6MT 328i M Sport Join Date: Mar 2019 Location: Miami iTrader: (3)	If you want it to be the loudest possible, you are going to have to straight pipe it all the way back after the downpipe. Any muffler shop can do this for you. They will straight pipe the secondary cat + resonator + no more muffler. Otherwise you can get a cat back exhaust that doesn't have a resonator in it and you'll do the same but a tad quieter. __________________ MY13: TTE400 Stage 2 turbo, Spec Single Mass flywheel + Stage 3+ Clutch, FTP V2 Turbo Inlet, Evolution Racewerks Charge pipe + Boost pipe + Intercooler, Turbosmart Recirculating Diverter Valve, aFE grill scoop + aFE Magnum Force Cold Air Intake, B58 coil retrofit, eBay Downpipe, Active Autowerke muffler, DW400 LPFP, B58TU HPFP, M5 s63TU injectors, Bimmermilvs, e80 tune by Navardi Tuned. 380 whp/360 wheel torque stock block
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05-05-2021, 04:56 AM	#11
jcdub Lieutenant 195 Rep 581 Posts Drives: 330e M Sport Join Date: Jul 2018 Location: Ireland iTrader: (0)	Consider a catless DP with a silencer. I've got one from RM motors. It's much quieter than the standard catless DP
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