Hi there, kinda new to the forum and i see that alot people go for the KO4 upgrade, i was wondering how hard it is to upgrade the KO3 turbo to a KO3s? my brother has one on his mk4 GTi it runs about 250bhp and it is seriously fast with extreme pulling power!! sounds like a jet when he boots it!
so i was wondering what would be needed to go to a KO3s and what the gains would possibly be?
Also is the KO3s a better turbo than the KO4?
would the KO3s internals/parts be exspensive ?
would it be a possible DIY job or professional?
Just a few questions there for you smart people
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P.S The golf is also for sale if anybody is interested just PM Me