Performance X-Pipe with Stock OEM Sound?

mixja · 08-31-2009, 08:44 PM

Is this possible?

It needs to be an X-Pipe with high flow cats that provides performance gains of others on the market (e.g. AA, Encore, Fabspeed etc), but sounds like stock or very close to stock, at ALL rpms.

Would this be possible for example by using two pairs of resonators in place of the factory secondary cats and resonators? The closest seems to be the Fabspeed which has resonator option, but still deletes secondary cats....

Brosef · 08-31-2009, 09:02 PM

You'll never keep stock sound when adding aftermarket parts. The resonated x-pipes with high flow cats seem to keep a civilized stock sound when you're not pushing it, but they add rasp when you go WOT. I personally like the sound a lot, but that's just an opinion.

MrHarris · 08-31-2009, 10:03 PM

Get one that has resonators if you do not want the rasp. I would go either encore or fabspeed w/ resonators

simonlam168 · 08-31-2009, 10:56 PM

I have done second cats delete x pipe combined with 4 resonators yesterday. I add 2 14" magnaflow resonator to slightly cut the loudness and get rid of the drone.

mixja · 09-01-2009, 12:47 AM

Quote:

Originally Posted by Brosef

You'll never keep stock sound when adding aftermarket parts. The resonated x-pipes with high flow cats seem to keep a civilized stock sound when you're not pushing it, but they add rasp when you go WOT. I personally like the sound a lot, but that's just an opinion.

I'm fine with a rasp at WOT if something does have to change - what really I want is the stock sound for daily driving scenarios - i.e. light to medium throttle at low RPMs - keeping the stock sound with no drone whatsoever or lowering of exhaust note...

MrHarris · 09-01-2009, 02:26 AM

I have the RR xpipes with HFC and it has no drone with a rasp when WOT past 4k rpm

mixja · 09-01-2009, 02:45 AM

Quote:

Originally Posted by MrHarris

I have the RR xpipes with HFC and it has no drone with a rasp when WOT past 4k rpm

To the trained ear, can you tell any difference from the stock system between 2000-3500RPM at light to medium loads?

08-31-2009, 08:44 PM	#1
mixja Captain 50 Rep 780 Posts Drives: 2011 E90 DCT Silverstone Join Date: Jun 2008 Location: Beverly Hils, CA iTrader: (1)	Performance X-Pipe with Stock OEM Sound? Is this possible? It needs to be an X-Pipe with high flow cats that provides performance gains of others on the market (e.g. AA, Encore, Fabspeed etc), but sounds like stock or very close to stock, at ALL rpms. Would this be possible for example by using two pairs of resonators in place of the factory secondary cats and resonators? The closest seems to be the Fabspeed which has resonator option, but still deletes secondary cats....
	Appreciate 0 Tweet Quote

08-31-2009, 09:02 PM	#2
Brosef Brigadier General 876 Rep 3,450 Posts Drives: F90 M5 Join Date: Aug 2009 Location: Chicago iTrader: (4)	You'll never keep stock sound when adding aftermarket parts. The resonated x-pipes with high flow cats seem to keep a civilized stock sound when you're not pushing it, but they add rasp when you go WOT. I personally like the sound a lot, but that's just an opinion.
	Appreciate 0 Quote

08-31-2009, 10:03 PM	#3
MrHarris yodog 197 Rep 5,025 Posts Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca iTrader: (5) Garage List 2009 BMW [10.00]	Get one that has resonators if you do not want the rasp. I would go either encore or fabspeed w/ resonators __________________ 2009 E92 M3 \| Alpine White \| Black Extended \| Advan RS \| Turner Test Pipes \| Dinan Axle-Back \| OETuning \| Eibach Springs \| UUC SSK \| VRS Front Lip \| VRS Type I Diffuser \| Matte Black \| RPi Scoops \| MS Filter \| Yokohama AD08 \| F1 Pinnacle Special Thanks: Gintani \| OETuning \| eAs
	Appreciate 0 Quote

08-31-2009, 10:56 PM	#4
simonlam168 Second Lieutenant 73 Rep 254 Posts Drives: E93-M3 F10-M5 Join Date: Apr 2009 Location: Hong Kong iTrader: (1)	I have done second cats delete x pipe combined with 4 resonators yesterday. I add 2 14" magnaflow resonator to slightly cut the loudness and get rid of the drone.
	Appreciate 0 Quote

09-01-2009, 02:26 AM	#6
MrHarris yodog 197 Rep 5,025 Posts Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca iTrader: (5) Garage List 2009 BMW [10.00]	I have the RR xpipes with HFC and it has no drone with a rasp when WOT past 4k rpm __________________ 2009 E92 M3 \| Alpine White \| Black Extended \| Advan RS \| Turner Test Pipes \| Dinan Axle-Back \| OETuning \| Eibach Springs \| UUC SSK \| VRS Front Lip \| VRS Type I Diffuser \| Matte Black \| RPi Scoops \| MS Filter \| Yokohama AD08 \| F1 Pinnacle Special Thanks: Gintani \| OETuning \| eAs
	Appreciate 0 Quote