which cat-back system is the loudest?

 

stock w/silencers

 

id have to say either HKS or Injen

 

rsr is the loudest exhaust, imo. but it's not a catback.

 

E-Cutout lol

 

with my high flow cats...it was insane...

o.o

 

I know my Injen track edition is louder than HKS's. Don't know about other cat-backs.

 

Injen Exhaust + other goodies.
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Topspeed Exhaust on a 350z
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^ nice ugot any vids on hks and fast intentions like that above?

 

:idiot question: how did you do that? any way to like ... half take them out?

 

HKS Exhaust + other mods.

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Fast Intentions Exhaust + mods

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SFR 3" TD or AAM 3" TD, 3" single's are loud too!! but different note and not cat back.

 

I really love how the FI exhaust can complement the engine sound instead of covering the engine sound like most aftermarket exhaust does

 

my hks and FI cats is loud as hell to me

 

i think JIC is the loudest! 3" single pipe