i have had problems with my exhasut ,basically the silencer wos nakered and blocked the whole exhuast ,after hrs of wacking it all out it now runs alot better and i didnt have to buy any new parts , but i think the cat is also buggered. Shall i de cat it or get a bypass pipe?? will it increase power and rinse all my petrol though lol, what are my options please??? limited budget also.