I'm an ED customer but not for cams, N/A tuning is lame imo, im also a k-tec customer, kamracing customer, demon tweeks customer, pure motorsport customer, ive bought things from just about every place that sells aftermarket things for clios over the years. I just looked on ED's website and its quite a steep price £1400 odd? for 438's, i remember people was getting them fitted and mapped for just over 1k, i guess inflation happened (or something?)
Regarding the dyno, it was more for your own benefit than mine, but each to their own, i guess you wouldn't mind if someone just sprayed your belts with some wd40 because it would look shiney and new, so that means it is! or you wouldn't mind paying money for new discs, just so the garage would resurface your originals cuz ''you could feel in your bum the car stops harder'' i personally prefer a bit more hard evidence on what im paying for.
if you do a bit of research or call some other renault specialists, k-tec, ED , 519? they'l all tell you, 197 cams wont make the power 438s make to suggest they make a 35 lb/ft gain in torque would suggest they are by far the best off the shelf cams available on the market, which isnt true.