A turbo Ralliart with a complete exhaust system from the turbo back would make more gains than just a catback. Although if you have plans to go turbo then I would say only invest in the catback as you will end up replacing the part from the catlytic to the turbo.

 

has anyone heard anything on a borla cat back i have heard them on some cars and they sound really good
i am thinking about getting it for 04 rallli

http://www.sportcompactonly.com/perf...arts.aspx?c=27

 

I used to have a realy nice exhaust system on My Opel Astra. Do you know if someone sells Remus in the USA???
I think that was the brand!