My turn to add my cent's
I had adj. cam gears on my stock cams with fantastic results after dyno tuning. With my butt dyno I was way way way off. Also you can't just say put the exhaust cam to this and the intake cam set to this. It doesn't work that way on a zetec, maybe a honda where the cam gears are indexed to the cam with key ways. On a zetec the timing can vary greatly between motors. Here is a link to Sport Compact Car's project focus they had way back in the day when they were around
HERE. You can see that the gains from the cam gears and other mods. In my opinion cam gears are worth it, but only worth it if you get them dyno tuned. Now if I can only afford to get my cams I have now dyno tuned again
