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Sticky Mother of all sound reducing threads
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 by g0dzilla
Sticky The "What Exhaust Should I Get?" Discussion
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143K
 by cyrus_gremlins
Sticky Epic Mother of all cat-back exhaust thread-Need everyone's input
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203K
 by empty pockets
Sticky All Available Exhausts for k20 & r18
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101K
 by Ddamienzz
Sticky ***Official Exhaust Thread: Vids/Pics & Sound clips***
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104K
 by Skyline4life
Just bought a 8th gen si coupe. All Stock!! Any suggestions for immediate changes/bolt ons?
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 by ChristopherK
2008 Civic FG2 - Invidia Q300 Exhaust
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 by dreamvillain_19
B pipe removal (cat nuts rounded)
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 by OMGOrangeSi
Best Exhaust for FG2?
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386
 by ChristopherK
2.5", 2.75" or 3" for my N/A build?
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 by cyrus_gremlins
2006 Hybrid catalytic converter sources (California - CARB compliant)
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 by MarkSterling
R18 muffler delete isn't loud enough, what now?
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 by mandm
Q300 exhaust from a 9th gen
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 by cyrus_gremlins
Yay or Nay? Ebay Exhuast (Spec-D N1 Catback) on FG2
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3K
 by FutureITR
R18 EGR delete, possible solutions to fix that CEL!
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 by jnissen
Vibrant streetpower muffler + vibrant ultra quiet resonator
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 by OMGOrangeSi
Help! R18 sedan exhaust install problem
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 by drespeed3
R18 EGR delete, possible solutions to fix that CEL!
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 by issanasr
R18 EGR delete
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 by issanasr
full exhaust dyno numbers with Flashpro?
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 by glujan2001
2.5in exhaust loud?
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588
 by Civicsi19
Looking for HFP sport axleback muffler
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 by johnali
Greddy Supreme SP
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 by cyrus_gremlins
Need to replace doughnut gasket?
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693
 by deagz
Who still makes nice, bolt on cat backs for a 2007 Si coupe.
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 by cyrus_gremlins
CA legal catalytic converter replacement help
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 by Helgaiden
Please Help - Full Exhaust Needed
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 by issanasr
megan racing downpipe?
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9K
 by issanasr
Best-sounding exhaust system ( New to civic community )
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 by issanasr
EGR delete caused cel and limp mode | r18
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 by issanasr
N1 Muffler vs N1 Catback - What's the Difference??
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 by 1SIck_CIVIC
Fitting a Q300 Sedan Exhaust to a Coupe?
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505
 by Brettm1983
Is anyone running the Invidia Q300 or has before?
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 by Brettm1983
Whistling Noise from stock exhaust
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4K
 by chibo
Loudest 3 inch exhaust?
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1K
 by FreshFigi
06-2011 Si Stock Exhaust finisher
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 by FreshFigi
Catalytic converter for invidia exhaust
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1K
 by OMGOrangeSi
Excelerate Performance: XLR8 Exhaust Clearance Sale!!!
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 by Eli82
Magnaflow Direct Fit Cat doesn't fit (06 Si)
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305
 by wdeelen
06 civic SI, stock NA, 70mm or 76mm skunk2 - performance loss?
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 by empty pockets
Exhaust Discussion Discuss Exhaust maintenance, upgrades and changes for your Honda Civic.
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