My astra is a 1.6 8v active, looking for a new exhaust (cat back) to make it both sound nicer and up the performance too. However i don't want it to be TOO loud or annoying on the motorway.
I have seen the GT3 systems on ebay for around £150. What are these like performance-wise?
I've also heard that a few people have remus centre sections with backboxes? Would this be better performance-wise? As i thought the irmscher back boxes were jsut as restrictive as standard and just looked better?
What are your opinions on the above? Any other options without spending stupid money?
Any video's of your exhausts would be great!