Originally Posted by Oranoco
iirc the standard Zetec head actually flows very well out the box.
Ive heard this too
for a stage 1 you could be looking at £350 and the same again to swap your internals from your head to the new gas flowed one, unless you can do all that yourself
Not sure how true as Im not a tech on this, but I was told its not worth doing by someone who had theirs done, thats why I didnt bother as its alot of money to pay out for a little gain