which is quieter??

 

Welcome to the forum! Im moving your post to the "Intake, Header, And Exhaust" section.

 

GReddy. until about 3-3.5k. then its still pretty quiet and deep. but it runs 400-550

 

what about the others.. apexi and invidia.. for a 00 honda civic ex

 

the apexi is loud. ive never heard of invidia

 

Depends on the apexi system. The N1 is would be quite loud, but from what i've heard the World Sport Apex system is actually quieter than the Greddy Evo system. Dont take my word on this because i dont have either on my car (yet) but the World Sport systems are usually quite quiet.

 

yeah thats what i meant...i figured thats what he was talkin aboutr since thats what everyone wants to know when it comes to Apexi

 

the quietest aftermarket exhaust without a silencer is the rs*r exmag however you cant find them new for much less than 550 and they are hard to find used.

 

another great thing about rsr is they are ceramic coated, so they keep the heat in. keeping the heat in keeps the air expanded. expanded air = higher velocidty = more added HP.

 

greddy sp2 & apexi ws2 would be your quietest between those brands, rs*r would be abso quiet, and comptech is pretty quiet also, all are pretty expensive