I have a sportex cat back system on my mk2 1.1 but I am sure the bore size of the centre pipe is far too big for my car losing it power. Am I better swapping it back to this, would there be any difference?
http://cgi.ebay.co.uk/CITROEN-SAXO-P...ayphotohosting
http://cgi.ebay.co.uk/CITROEN-SAXO-P...ayphotohosting