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      08-31-2009, 08:44 PM   #1
mixja
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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....
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      08-31-2009, 09:02 PM   #2
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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.
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      08-31-2009, 10:03 PM   #3
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Get one that has resonators if you do not want the rasp. I would go either encore or fabspeed w/ resonators
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      08-31-2009, 10:56 PM   #4
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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.
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      09-01-2009, 12:47 AM   #5
mixja
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Quote:
Originally Posted by Brosef View Post
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...
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      09-01-2009, 02:26 AM   #6
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I have the RR xpipes with HFC and it has no drone with a rasp when WOT past 4k rpm
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      09-01-2009, 02:45 AM   #7
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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?
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