Resonator or secondary cat delete?

Eddiee07 · 04-27-2018, 02:08 PM

Question for the exhaust gurus on here:
Currently have a muffler delete on my 328i looking to get a little more backfire(pop) from it, what would be better a muffler delete + resonator delete or a muffler delete + secondary cat delete? TIA

atmosphericM · 04-27-2018, 02:53 PM

http://www.e90post.com/forums/showthread.php?t=1483216

Elias_E90 · 04-27-2018, 03:05 PM

Headers and secondary cats delete it will pop alot but it will be loud, also i recommend not messing with resonator. My car have headers, secondary cats deleted and swapped with straight through muffler, resonator, turbo type muffler.. it is the best configuration i liked from custom exhaust

Ps: a tune is best for pops also it is better to not have any cats as overrun (pops) may burn them and melt them

Eddiee07 · 04-27-2018, 04:58 PM

Quote:

Originally Posted by Eliase90

Headers and secondary cats delete it will pop alot but it will be loud, also i recommend not messing with resonator. My car have headers, secondary cats deleted and swapped with straight through muffler, resonator, turbo type muffler.. it is the best configuration i liked from custom exhaust

Ps: a tune is best for pops also it is better to not have any cats as overrun (pops) may burn them and melt them

What can happen with messing with the resonator?

atmosphericM · 04-27-2018, 05:34 PM

http://lmgtfy.com/?q=exhaust+resonator

Elias_E90 · 04-27-2018, 10:23 PM

In short, resonators cancel sound frequencies, they do not add much back pressure (unlike mufflers) so without it you will have a drone and vibrations in exhaust. They dont control loudness.

Biginboca · 04-28-2018, 05:12 AM

I agree with Eliase90 . Keep resonator it cancels drone and is not robbing you of power. Delete the secondary’s you will get more sound and pick up some (7-9) horsepower. That’s a win/win.

04-27-2018, 02:08 PM	#1
Eddiee07 Enlisted Member 21 Rep 46 Posts Drives: 2007 BMW 328i Join Date: Oct 2015 Location: Southern California iTrader: (0)	Resonator or secondary cat delete? Question for the exhaust gurus on here: Currently have a muffler delete on my 328i looking to get a little more backfire(pop) from it, what would be better a muffler delete + resonator delete or a muffler delete + secondary cat delete? TIA
	Appreciate 0 Tweet Quote

04-27-2018, 02:53 PM	#2
atmosphericM Basic Bimmer 523 Rep 930 Posts Drives: E92 328i 6MT ///M Join Date: Sep 2017 Location: B'ham iTrader: (1) Garage List 2013 BMW 328i Coupé ... [10.00]	http://www.e90post.com/forums/showthread.php?t=1483216
	Appreciate 0 Quote

04-27-2018, 03:05 PM	#3
Elias_E90 Private 27 Rep 94 Posts Drives: E90 328i Join Date: Apr 2018 Location: Lebanon iTrader: (0)	Headers and secondary cats delete it will pop alot but it will be loud, also i recommend not messing with resonator. My car have headers, secondary cats deleted and swapped with straight through muffler, resonator, turbo type muffler.. it is the best configuration i liked from custom exhaust Ps: a tune is best for pops also it is better to not have any cats as overrun (pops) may burn them and melt them __________________ E90 328i n52 auto, 3 stage IM, k&n drop in, charcoal delete, silicone boot, ebay headers, secondary cats delete, bpc tune. MILVs (soon), MT swap (planning)
	Appreciate 0 Quote

04-27-2018, 05:34 PM	#5
atmosphericM Basic Bimmer 523 Rep 930 Posts Drives: E92 328i 6MT ///M Join Date: Sep 2017 Location: B'ham iTrader: (1) Garage List 2013 BMW 328i Coupé ... [10.00]	http://lmgtfy.com/?q=exhaust+resonator
	Appreciate 0 Quote

04-27-2018, 10:23 PM	#6
Elias_E90 Private 27 Rep 94 Posts Drives: E90 328i Join Date: Apr 2018 Location: Lebanon iTrader: (0)	In short, resonators cancel sound frequencies, they do not add much back pressure (unlike mufflers) so without it you will have a drone and vibrations in exhaust. They dont control loudness. __________________ E90 328i n52 auto, 3 stage IM, k&n drop in, charcoal delete, silicone boot, ebay headers, secondary cats delete, bpc tune. MILVs (soon), MT swap (planning)
	Appreciate 0 Quote

04-28-2018, 05:12 AM	#7
Biginboca Colonel 3791 Rep 2,738 Posts Drives: 2009 E92 328i 6MT Join Date: Jun 2017 Location: Boynton Beach, FL... USA iTrader: (3)	I agree with Eliase90 . Keep resonator it cancels drone and is not robbing you of power. Delete the secondary’s you will get more sound and pick up some (7-9) horsepower. That’s a win/win.
	Appreciate 0 Quote