well theres at least one clio running over 190bhp without throttle bodies so it is possible. also you need the car mapped not chipped to get the best out of the mods. the two people i recommend for head work and cams are http://www.angel-works.co.uk/home.php thats ben R and http://www.ap-developments.com/ thats stan. top quality head work but also they use cat cams which seam to have far superior results than others.