With spring on its way I'm saving up to complete the rest of my exhaust system on the G (sedan), as of now I have headers, stock cats, aft.market Y pipe, coupe mid pipe and stock muffler. It sounds great but I know with the headers installed and leaving stock parts on the exhaust I must be losing power or not gaining much.
Here's what I plan to do buy high flow cats, and an aftermarket (mid pipe and back) muffler, I'm not sure which company I should go with one thing I do know is I don't want it to sound no louder than it is already I can't stand loud exhausts it gives me a headache.
Any help/advice would be greatly appreciated but keep in mind I'm on a tight budjet.

 

NO one can help me out with this

 

I believe it may have to do with your comment about the new setup being no louder than it already is. HFCs will make it louder. Axle over muffler or aftermarket midpipe will make it louder. Are you saying you are willing for it to be louder but not considerably or you dont want it louder at all? If it is not the later then I would suggest Berk ceramic HFCs.
Any muffler is going to be substantially louder in my opinion. I consider my hks rear section to be quite louder than the oem axle over section.

 

Everything will be louder.

 

Yes sorry I don't mind it to be a bit louder thats a given with aftermarket setups as long as its not droaning inside at crusing speeds. My bro has a Greddy exhaust on his 01' Maima and it sounds great if I can get the same sound I'll be happy. Will the HFC's make it alot more louder or just a bit?

 

If your brother has Greddy and you like it I say go with Greddy. There are sound clips on You Tube.