so im planning on getting a cat back exhaust for a 99 civic si, just wondering what is a good brand to go with and why, and if anyone can suggest any good sites to pick one out, thanks

 

i personally think an apexi world sport 2 is a good exhaust for an em1. i'm a fellow em1 owner and it's my daily. the world sport 2 is not as loud as alot of other exhausts out there, and isn't the "fart can" design. i have a loud exhaust on mine and i wish i would've went this way instead. it all depends on your taste and how much money you have to spend

 

I too have a WS2 o nmy Si, an dlove it, looks great, sounds fantastic, and as stated above isnt super loud. Well worht the money IMO

 

you are going to get the apexi ws2 answer from 95% of the people who post here.

 

performance wise is there any difference between a ws2 and a skunk2... i plan on doing a little drag racing next spring.

 

Thermal R&D

 

you always have the option of buying the resonator muffler and mandrel bends your self and making one you tend to say a few hundred dollars and this way you can choose your muffler and resonators of your choice. as well as your pipe diameter. this is if you are capable of weldng and have access to the other tools you may need. kind of a preference thing really but my carbon ti HKS muffler and 2.5 inch mandrel bent home made exhaust looked nice and sounded pretty nice too i added a 2.5 inch straight through resonator to tone the volume down after a test run.