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Old Nov 10, 2004 | 09:16 AM
  #1  
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i just put on z06 exhaust and was wondering if an x pipe would help and how much h.p. also will the x pipe pass smog. thanks
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Old Nov 10, 2004 | 09:25 AM
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I have Z06Ti and wonder about the dif. in sound after Xing.
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Old Nov 10, 2004 | 09:44 AM
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I ran for awhile with a Magnaflow X-pipe and stock (non-Z06) exhaust. The only audible effect was a slightly deeper tone when accellerating. Any hp improvement is negligible.

Smogging should not be an issue, since it is a passive part (after the cats) and not visible unless the car is on a lift.
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Old Nov 10, 2004 | 10:18 AM
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Originally Posted by BW1
... Any hp improvement is negligible ...

You might see 2-5 hp.. If you prefer not to listen to gurgling on deceleration then go with an x-pipe.

Mark
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Old Nov 10, 2004 | 10:35 AM
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Since the X-Pipe is after the cats then its not a problem for passing the smog test!
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Old Nov 10, 2004 | 10:58 AM
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The X will mellow any exhaust above what you hear with the factory h-pipe. You put an x-pipe in more for better sound than hp.

My B&B Bullets were LOUD with my Magna x-pipe. When I installed the Bullets on a friends car with stock H-pipe, the noise was a notch short of deafening

F
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Old Nov 10, 2004 | 11:11 AM
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Originally Posted by Flintstone
My B&B Bullets were LOUD with my Magna x-pipe. When I installed the Bullets on a friends car with stock H-pipe, the noise was a notch short of deafening
So thei Bullets with an X-PIPE were even louder than with the H....interesting.....how was the difference in "burbling"...
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Old Nov 10, 2004 | 12:55 PM
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The X-pipe should not present any problems with a smog check. It may make the exhaust sound a little deeper, but really no performance gain that I have noticed.
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Old Nov 10, 2004 | 01:16 PM
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Originally Posted by Thunder7
So thei Bullets with an X-PIPE were even louder than with the H....interesting.....how was the difference in "burbling"...
Nope, other way around. Also, with x-pipe most if not all the burbling was gone.
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Old Nov 10, 2004 | 01:27 PM
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Originally Posted by Flintstone
Nope, other way around. Also, with x-pipe most if not all the burbling was gone.
Ah, OK...shew....I have the bullets (and love them), but don't want it to be any louder, but have been looking at an X-Pipe to smooth it out...
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