I forget where I heard this, but don't heat wrap and heat coat. But you can put a turbo blanket over heat coating on the turbo.. Idk someone else can chime in on this but I strongly suggest heat coating, I've used it on every header ive had while NA and every turbo manifold/turbo/downpipe/wastegate/dumptube I've ever had. Especially since the Si chassis have such a bad heat trap under the cowl.