Hello I was wondering if an upgraded catyliac converter worth investing in for my 95 integra ls. and if so what brand should i get. And another question is which header design is best for LS motors. 4-2-1 or 4-1 designs. I'm think about adding NOS later on. Right now I have a Tanabe hyper medallion set. thanks.

 

Comptech 4-2-1 headers are nice, so is DC Sports. Yes a cat will help with the exhaust flow, good investment.