should i put a 3.5" or 4" outlet muffler on my 99 civic?



Suanico

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#1
is 4" to big? whats a good size to fill in the groove in the bumper for the muffler? the N1 looks like it sits nicely, but im starting to think its to big and flashy, any suggestions?
 


1337 | RCE

teh broke enthusiast
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#2
4" fits perfect. i have a megan racing universal muffler and the guy that installed it fit it perfectly too. i'd imagine that an entire system will fit just right since it's already made to fit exactly.
 

got traction

i rock the sohc
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#3
mine is 4" it fits perfect
 


Suanico

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#7
sweet majority rules thanks
 




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