Res delete or no?

Wlew · 05-28-2010, 05:47 PM

I have the top speed pro 1 muffler and I absolutely love it. However, I would like a little bit more sound from it. I think. I am not sure whether I do or not. Should I delete the res? would this make it just obnoxiously loud? or would it sound a bit more aggressive on start up and WOT?

I am nervous to do it as I might not like it, and then its money down the drain... thoughts?

BSME90 · 05-28-2010, 05:56 PM

Personally, I'm not a fan of the resonator delete. I have the muffler delete on my car and I'm happy with it. I've heard some RD clips on youtube and it sounds just plain obnoxiously loud.

Remember....you have a BMW, not a muscle car.

jonerik26 · 05-28-2010, 06:11 PM

i wouldn't delete it either the sound inside the cabin is going to kill, i suggest you just try to find a way to enjoy the sound....

c_jeong89 · 05-28-2010, 06:23 PM

depends what kind of muffler, i mean the bmw pe has a res delete and there's no drone.

Wlew · 05-28-2010, 06:28 PM

Yea, as I said I have the top speed muffler... I have heard good and bad things about deleting the res.

thanks for the advice though guys

guerilla twang · 05-28-2010, 06:29 PM

Hate to threadjack, but who knows where the secondary cats are located and how can i delete them?

jmar1334 · 05-28-2010, 06:49 PM

Quote:

Originally Posted by Wlew

I have the top speed pro 1 muffler and I absolutely love it. However, I would like a little bit more sound from it. I think. I am not sure whether I do or not. Should I delete the res? would this make it just obnoxiously loud? or would it sound a bit more aggressive on start up and WOT?

I am nervous to do it as I might not like it, and then its money down the drain... thoughts?

I had the top speed muffler with and without the res. Take the res off. It sounds much better, and I experienced no drone.

Wlew · 05-28-2010, 07:50 PM

agreed where are the second cats? and what kinda gains can be had from deleting them? and warranty issue with doing so?

Alexander · 05-28-2010, 09:45 PM

Quote:

Originally Posted by guerilla twang

Hate to threadjack, but who knows where the secondary cats are located and how can i delete them?

Quote:

Originally Posted by Wlew

agreed where are the second cats? and what kinda gains can be had from deleting them? and warranty issue with doing so?

You guys don't know where secondary cats are???
Don't delete them. Get magnaflow high flow cats instead. Do a search there are threads.

A bumper sticker will void your warranty if your specific dealer says so. Go to the region sections and find out who the mod friendly dealers are.

In Atlanta United BMW Roswell and BMW of South Atlanta are 100% mod friendly, where other dealers will freak at anything.

Primary cat deletes gives you real gains. Also I don't recommend running a muffler delete with cat deletes, considerate loss of pressure.

Plus you really need a dyno tune to take advantage of the cat delete.

Wlew · 05-28-2010, 10:12 PM

Aonarch, when did youget a 335 and get rid of your 328??

Wlew · 05-28-2010, 10:13 PM

and you think the secondary cats wont give any gains? I also heard it makes the gas smell a lot more...

jmar1334 · 05-28-2010, 10:36 PM

Quote:

Originally Posted by Wlew

agreed where are the second cats? and what kinda gains can be had from deleting them? and warranty issue with doing so?

They are before the res when the exhaust is two pipes. They are right when exhaust bends. Idk about the gains by removing them though.

Alexander · 05-28-2010, 11:53 PM

Quote:

Originally Posted by Wlew

Aonarch, when did youget a 335 and get rid of your 328??

Haha I had both for a while, then sold my 328i on Tuesday.

Quote:

Originally Posted by Wlew

and you think the secondary cats wont give any gains? I also heard it makes the gas smell a lot more...

It does make the gas smell very strong. I have never heard or seen any gains.

Quote:

Originally Posted by jmar1334

They are before the res when the exhaust is two pipes. They are right when exhaust bends. Idk about the gains by removing them though.

Primary's give gains, but you need O2 sims.

05-28-2010, 05:47 PM	#1
Wlew Major 77 Rep 1,116 Posts Drives: 2011 E90 335i Join Date: Sep 2009 Location: Washington, DC iTrader: (12)	Res delete or no? I have the top speed pro 1 muffler and I absolutely love it. However, I would like a little bit more sound from it. I think. I am not sure whether I do or not. Should I delete the res? would this make it just obnoxiously loud? or would it sound a bit more aggressive on start up and WOT? I am nervous to do it as I might not like it, and then its money down the drain... thoughts? __________________ 2011 335i Sports Package \| VRSF FMIC \| Cobb AP3 \| Dinan Exhaust \| BMS Intake \| VRSF CP \| Lux H8 Angel Eyes \| Mtec LED Fogs \|
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05-28-2010, 05:56 PM	#2
BSME90 Captain 42 Rep 757 Posts Drives: E90 Join Date: Jan 2009 Location: MN iTrader: (0) Garage List 2007 328xi [9.00]	Personally, I'm not a fan of the resonator delete. I have the muffler delete on my car and I'm happy with it. I've heard some RD clips on youtube and it sounds just plain obnoxiously loud. Remember....you have a BMW, not a muscle car.
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05-28-2010, 06:11 PM	#3
jonerik26 Lieutenant Colonel 58 Rep 1,906 Posts Drives: black 335i e90 PRE-LCI Join Date: Apr 2006 Location: somewhere iTrader: (23) Garage List 2007 335i [8.00] 1998 Acura Integra [8.50] 2006 325i [8.00]	i wouldn't delete it either the sound inside the cabin is going to kill, i suggest you just try to find a way to enjoy the sound.... __________________
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05-28-2010, 06:23 PM	#4
c_jeong89 Banned 85 Rep 2,097 Posts Drives: E90 TiAg Join Date: Feb 2009 Location: Irvine/Bay Area iTrader: (16)	depends what kind of muffler, i mean the bmw pe has a res delete and there's no drone.
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05-28-2010, 06:28 PM	#5
Wlew Major 77 Rep 1,116 Posts Drives: 2011 E90 335i Join Date: Sep 2009 Location: Washington, DC iTrader: (12)	Yea, as I said I have the top speed muffler... I have heard good and bad things about deleting the res. thanks for the advice though guys __________________ 2011 335i Sports Package \| VRSF FMIC \| Cobb AP3 \| Dinan Exhaust \| BMS Intake \| VRSF CP \| Lux H8 Angel Eyes \| Mtec LED Fogs \|
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05-28-2010, 06:29 PM	#6
guerilla twang I do my crosswords in pen. 17 Rep 751 Posts Drives: OEM+ 330i Join Date: Feb 2010 Location: KCMO iTrader: (6)	Hate to threadjack, but who knows where the secondary cats are located and how can i delete them? __________________ GRUPPE TITAN Midwest
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05-28-2010, 07:50 PM	#8
Wlew Major 77 Rep 1,116 Posts Drives: 2011 E90 335i Join Date: Sep 2009 Location: Washington, DC iTrader: (12)	agreed where are the second cats? and what kinda gains can be had from deleting them? and warranty issue with doing so? __________________ 2011 335i Sports Package \| VRSF FMIC \| Cobb AP3 \| Dinan Exhaust \| BMS Intake \| VRSF CP \| Lux H8 Angel Eyes \| Mtec LED Fogs \|
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05-28-2010, 10:12 PM	#10
Wlew Major 77 Rep 1,116 Posts Drives: 2011 E90 335i Join Date: Sep 2009 Location: Washington, DC iTrader: (12)	Aonarch, when did youget a 335 and get rid of your 328?? __________________ 2011 335i Sports Package \| VRSF FMIC \| Cobb AP3 \| Dinan Exhaust \| BMS Intake \| VRSF CP \| Lux H8 Angel Eyes \| Mtec LED Fogs \|
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05-28-2010, 10:13 PM	#11
Wlew Major 77 Rep 1,116 Posts Drives: 2011 E90 335i Join Date: Sep 2009 Location: Washington, DC iTrader: (12)	and you think the secondary cats wont give any gains? I also heard it makes the gas smell a lot more... __________________ 2011 335i Sports Package \| VRSF FMIC \| Cobb AP3 \| Dinan Exhaust \| BMS Intake \| VRSF CP \| Lux H8 Angel Eyes \| Mtec LED Fogs \|
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