Originally posted by madmole:
Cam gears are a waste of time and money on the Zetec.
I've seen too many dyno plots from Focus guys that say otherwise.
Sport Compact Car installed exhaust and intake gears on their project Focus and were very happy with the results.
I think the two will go hand in hand. Get the cams and gears, then fine tune the new cam with the gears on the dyno. I think that's how you'll see the best gains.
See page 2 here. I have 1 cam gear but I'm too much of a pu55y to install it myself.