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Model specific boards => Golf mk3 => Topic started by: clancy on 02 July 2014, 00:20

Title: 8v cat back on a 16v ?
Post by: clancy on 02 July 2014, 00:20

I'm after an exhaust system for my 16v, but second hand these don't seem to come up very often.  8v ones seem to come up more

I know yiu can't interchange parts, but my understanding is if you replace everything after the cat it's fine ?

Only thing is the 8v systems are designed at 50mm and the 16 at 55mm,  is that 5mm reduction really going to make a difference performance wise ? Or should I just what it out for a proper 16v system

Thanks for any help

Title: Re: 8v cat back on a 16v ?
Post by: tweed on 02 July 2014, 10:36

Ive never seen any test to see what happens with a 8v exhaust on a 16v or vr6 so cant say if it would make a difference, but why would VW go to the trouble and expense to fit a larger diameter exhaust if it didn't need it  :huh:

so dont fit it mate and weight for a 16v/vr6 exhaust.   

Title: Re: 8v cat back on a 16v ?
Post by: Wayne on 02 July 2014, 13:54

It will build back pressure and you will lose power.

Title: Re: 8v cat back on a 16v ?
Post by: clancy on 02 July 2014, 14:10

Fair enough that's that then! Just getting impatient

Cheers for the replies guys

Title: Re: 8v cat back on a 16v ?
Post by: clancy on 03 July 2014, 18:41

Am I right in thinking the scorpion systems are the same for 8 and 16v models,  both 55mm ?