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      02-02-2013, 04:02 PM   #1
LarThaL
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Challenge Street mid + M performance catback. Anyone?

Anyone running this set-up? Any sound clips?
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      02-02-2013, 04:15 PM   #2
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it gets nasty raspy with deleting either cats
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      02-02-2013, 05:23 PM   #3
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Quote:
Originally Posted by kitw View Post
it gets nasty raspy with deleting either cats
Ok. Has anyone tried just cutting secondary cats and replacing with resonators?

I ask this because on my Porsche Cayenne, I replaced the secondary cats with resonators and it sounds fantastic. The same type of cat delete with a straight pipe is also very raspy, however.
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      02-02-2013, 05:49 PM   #4
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Doesn't the Challenge Street X-Pipe do that already?

http://challenge-usa.com/blog/produc...x-pipe-street/
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      02-02-2013, 07:11 PM   #5
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Quote:
Originally Posted by SROC5 View Post
Doesn't the Challenge Street X-Pipe do that already?

http://challenge-usa.com/blog/produc...x-pipe-street/
Stock mid pipe has secondary cats + a set of resonators. Challenge has no cats but only one set of resonators.

I was referring to simply cutting the stock secondary cats and welding resonators. This would give you a 4 resonator/no secondary cat set-up
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      02-02-2013, 08:12 PM   #6
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Quote:
Originally Posted by LarThaL View Post
Stock mid pipe has secondary cats + a set of resonators. Challenge has no cats but only one set of resonators.

I was referring to simply cutting the stock secondary cats and welding resonators. This would give you a 4 resonator/no secondary cat set-up
I see your point.
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      02-02-2013, 11:59 PM   #7
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You might be on to something good!
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      02-03-2013, 12:50 AM   #8
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I've found that resonators do cut down on the rasp somewhat, but not completely. I really don't think removing the secondary cats is worth it, I think it's always better to remove the primaries with a $400 test pipe.
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      02-05-2013, 09:00 PM   #9
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Quote:
Challenge Street mid + M performance catback. Anyone?Anyone running this set-up? Any sound clips?
I am running the Challenge Engineering "Street" X-pipe with the Akrapovic slip-on if that is of interest to you.
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      03-21-2013, 07:38 AM   #10
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Quote:
Originally Posted by MJM View Post
I am running the Challenge Engineering "Street" X-pipe with the Akrapovic slip-on if that is of interest to you.
I'm interested... is that raspy? any sound clips?

i'm about to install a challenge SPORT pipe with akra rear section.
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      03-21-2013, 08:20 AM   #11
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Quote:
Originally Posted by LarThaL View Post
Stock mid pipe has secondary cats + a set of resonators. Challenge has no cats but only one set of resonators.

I was referring to simply cutting the stock secondary cats and welding resonators. This would give you a 4 resonator/no secondary cat set-up
I have had all 3 set-ups on my car with oem exhaust mod (similar sound to MPE).

First had oem mod only with factory x-pipe and it sounded awesome. Eventually, I wanted more volume so I cut out the secondary cats and replaced with straight pipes. This produced a noticeable increase in volume but also made the sound very raspy. I drove around like that for 6 months or so before getting tired of the sound. Recently I had resonators welded in where the straight pipes were for a quad resonator and no secondary cat setup. Initially I was disappointed by the reduced volume but the tone is much improved. However, not sure how different it sounds now than when I had the secondary cats in place.
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      03-21-2013, 09:10 AM   #12
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Rasp not to to bad with just test pipes however you can notice it at times. I will be putting some resonators on it this week along With overpriced o2 sensor replacement fml! I'll let you know the result.
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      03-21-2013, 11:33 AM   #13
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Quote:
Originally Posted by M3Denver View Post
Rasp not to to bad with just test pipes however you can notice it at times. I will be putting some resonators on it this week along With overpriced o2 sensor replacement fml! I'll let you know the result.
are you running an m performance?
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      03-22-2013, 12:31 PM   #14
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Quote:
chris s: I'm interested... is that raspy? any sound clips?
No raspy sound, just a classy, more aggressive exhaust sound without being too loud. Also no drone at all.!

Sorry I don't have any sound clips.
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      03-22-2013, 02:11 PM   #15
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Quote:
Originally Posted by kitw View Post
I've found that resonators do cut down on the rasp somewhat, but not completely. I really don't think removing the secondary cats is worth it, I think it's always better to remove the primaries with a $400 test pipe.


This is what mine sounded like (BMW Performance exhaust + Turner test pipes)

I thought it was too raspy.
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      03-24-2013, 04:30 AM   #16
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these threads about MPE with xpipe always ends up dying with no result...
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      03-24-2013, 11:11 AM   #17
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I was about to purchase a M performance catback, but when I mated it with my challenge xpipe it sounded pretty bad, that is why I went with the evolve e-tronic unit
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      03-24-2013, 11:56 AM   #18
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I cut out the stock resonators and added them to my Fabspeed X-pipe to make it quad resonated. The OEM mod was super raspy (a little louder and higher pitched than Kitw's vid) before and now I think the sound is perfect for me. No drone, a little louder than stock while cruising and a nice aggressive tone at WOT
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