I am planning on rebuilding a ko3s I have laying around and running e85. What do I need exactly? I heard that you can push quite a good amount on the ko3s it's off a mk4.

 

If it were for the A4 b5 platform, you will need fuel pump, injectors and tune to accommodate it all. Ive read that the rest of the fuel system is fine on the b5's (lines etc) The pump, injectors and tune are a must, as for the rest of the fuel system, do a little research on the mk4 and see if people have ran it before and what they have done. Should be pretty easy to find.

Regards,
George