hey guys,

I've got an S5 turbo primary fuel rail and a S4 turbo secondairy fuel rail.

What is the thread size? Which adapters do i need (going to an6)?


I found intel that makes me confused so i hoped somebody could tell me what it actualy is. FC3S pro says m14 and m12 but i can hardly beleive that i saw 2 different hole sizes.

Thanks

 

There is a thread that has the S5 sizes. Its in one about making a better fuel system.

But I just had my rails drilled and retapped, no problems.