Hi all just got myself a mk1 skoda octavia tdi pd130 with high miles 225k I know high but had cam belts done just needs a service any way I poped boost pipe off after intercooler before inlet manifold it's pretty gunked up would any of you recommend a terra clean service or not if not then what . . . ?

Welcome to Briskoda. With regular servicing and proper care, you should find that car is well under middle-aged!
Try ferreting around the Octavia sub-forum: you'll find tea, sympathy and valuable experience in there.