Well I have to say, the ecotek IS worth the money! After a boogger to fit, I got it sorted, and noticed absolutely nothing. I thought, pants wot a waste o money!
BUT......Having driven my girlfriend home 22miles at about 50mph all the way, it was seeming much nicer.
Now its fully settled in, I am noticing a big reduction in petrol stops, and even a wee bit more power! its sorted out a few flat spots i had between 2-3000 revs and the engine runs smoothly now. This was all on a standard 1.4RT, having run 62000miles! I would say its well worth it, even tho it wasnt as easy as i thought to fit (Im a complete beginner tho!)
Go for it!!!!