Hi , just a quick question , do you have to have a special locking tool for cat cams or does the normal renault locking tool time them up fine !! not sure what cat cam profile it has in it but o it made 197bhp so presume they are 421's as it also runs a bit lumpy , the car is MarkM old 182 of here , think it was the gdi cam package he had on the car or the angel works cam package , the rr graph http://www.cliosport.net/forum/attachment.php?attachmentid=66698&d=1308252663 , can anyone tell what cams it has by the curve on the graph