compounds are like the savior for towing in the steep to keep egt's down. same boost and you'll have WAY lower egt at speed and load going up. it just kills me how much the stupid kits cost. you could build your own kit complete with 2 new turbos for what these places charge for just a piping kit!! as if the diesel prices weren't already inflated by idiots, now the parts have damn near the corvette tax on them.