Patrick, below is what I have done on both my H16 & H14 turbo. Add grommets, some good quality non-stretch line and Rubatex tubing. The tubing is 2" diameter and closed cell foam. Used for insulating exterior air conditioning lines. Lasts for years.

Good luck, Tom G



PS. Having some difficulty posting the pic but will continue to try.

PSS. May need to email the pic direct via private mail.