By design the multi-pass crossflow should be a decent improvement over stock. Theoretically an all aluminum engine should dissipate heat faster than it's cast iron counterpart. Moving the radiator 3" further away from the heat source should also help. We'll be running a small oil cooler too. An electric water pump and electric cooling fans should keep it from overheating in slow moving traffic. It's also going to have a large oil capacity and that should help. A huge diameter exhaust can screw with proper back pressure and cost horsepower on a naturally aspirated motor but isn't really an issue with a boosted engine. I think they recommended a 4" exhaust. That should get excess heat away quicker.
