the small pipe that comes off the top of the intercooler on the turbo side you mean?

stick a bit of broom handle in it and block it up

the vaacume pipe that comes off the plenumn - couple of options - but a bung for the plenumn with the right sized thread, ot stick a small bolt in the pipe, making sure its a tight fit, and then stick a cable tie round it for good measure - thats what i've done with mine