hi guys, ever since iv had my a3 quattro there has been an exhaust leak at the front thats driven me crazy. i changed the manifold whick had a huge crack in it and both block-manifold and manifold-turbo gaskets but still the noise remained. after discussing it with a qualiffied mechanic who has worked on them befor we decided it must be the down pipe as aparently they are known for cracking the flanges. since finding that out ive had a few holes apear in the cat-back section of my exhaust.
as im upgrading to a ko4 when its warmer (i have a crashed s3 for parts) after reading a thread on here i decided i may aswell change the rear section of the exhaust to an s3 one to save money when i do this as i wont be "milteking" straight away.
so got me a cheap (£13 on ebay .) exhaust and a new a3 quattro down pipe
now heres where i finally get to my problem i read that to fit the s3 exhaust to the a3 quattro downpipe all i would need was an s3 cat or decat as the front fittings on both were the same but the back pipe was obviously a larger bore. so i got myself an s3 cat for now.
on test fitting the 2 pipes i have now realised on the a3 cat the 4 lower bolts are level but on the s3 they are not so a complete mismatch which has crushed me like a grape as ive wasted time and money on this.
please please can someone point me in the right direction of where to go from here as i would really like a nice airtight exhaust
many thanks to anyone who can help me