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true dual Stock ISF Exhaust

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Old 06-24-14, 09:34 AM   #1
collinedw
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Default true dual Stock ISF Exhaust

Hey guys,

Has anyone done a true dual mod to the stock ISF exhaust?
eliminating the y pipes after the 2nd cats and before the rear mufflers (also removing resonator) and done separate pipes??
Im wanting to do it but want to know if its worth it. I can imagine it would help the flow.
ANY SOUND DIFFERENCES?

Thanks
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Old 06-24-14, 09:44 AM   #2
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Although I am now running the new Dual Mode PPE Exhaust system, my prior exhaust was a fabricated dual system using stock mufflers with dual intakes on the mufflers:

http://www.clublexus.com/forums/is-f...n-exhaust.html

Lou
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Old 06-24-14, 09:01 PM   #3
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Any sound differences? I'm
Not going to do the dual muffler inlets. Just the separate pipes. What would the difference be without the x pipe and just leaving the pipes separate all the way to the end?
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Old 06-25-14, 02:44 AM   #4
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You may experience vibration without an X pipe, kinda like a whump-whump sound. You may have to visit the exh. shop a few times to get the desired effect.
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Old 06-25-14, 09:42 AM   #5
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Quote:
Originally Posted by collinedw View Post
Any sound differences? I'm
Not going to do the dual muffler inlets. Just the separate pipes. What would the difference be without the x pipe and just leaving the pipes separate all the way to the end?
You may want to read this:

http://www.carid.com/articles/are-2-...st-system.html

Lou
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Old 06-26-14, 01:48 PM   #6
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I have heard nothing but good things about Joe Z exhaust and by good things I mean the exhaust note and . I have to fight myself every single engine start not to go by one. I need the F as quiet as possible when I am moving executive staff members and then straight beast mode when I drop them off at the airport.
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Old 06-26-14, 03:00 PM   #7
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^^^^Then this would bee up your alley:

http://www.clublexus.com/forums/is-f...e-muffler.html

Lou
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Old 06-26-14, 03:00 PM
 
 
 
 
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