with the mods I have, what do you think about port and polishing the intake and exhaust manifolds? I will also be doing water meth injection in the future so I'm just trying to think of what I can do next.. I don't wanna go to BT so I'm really just looking for anything worth doing to a K04.. I'm sure I would buy a used set just incase anything were to go wrong.

 

Your not going to gain anything by porting or polishing the manifolds. If you mean head, you already have a large port head so you wouldnt gain anything there either, turbo is way to small. Youllbasically be wasting money/time

 

K.. thats what I kinda thought.. didn't know if with the k04 it would help or anything so just figured I'd ask. Thanks!

 

ko4 is basically a ko3s. It just spikes higherbecause people push it far beyond its efficency and think that the small gains is worth the mile high psi.

 

Cincy youre gunna drive the market value of ak03s up with such statements [:-]

 

The inlet diam of the ko3s is slightly larger with a more effiecent 8 blade compressor wheel vs a ko4 with a ko3 housing and a slightly larger exducer (bottom part of the blade). So its basically larger vs efficent.



ko3s for a transverse car




close up of ko3



ko3s opening



ko3 opening

 

It seems like every time I do a search and you are in a thread you are always able to bash a k04 setup lol! it does make sense what you are saying.. luckly I got the car with it already installed and tuned.. However, everything you say just makes me want water/meth injection that much more.. I might buy it for myself for christmas.

 

least you would know what one present under the tree is

 

wait.. which one is the k04 opeining? You messed up a little i think

 

It's a KO3 and a KO3s, no KO4 opening up there.