Radiator new 30,000 km's ago. Have gone through basic checks. Flushed cooling system, both fans seem fine. Replaced thermostat.i was thinking maybe egr , so I just fitted Dawes valve & needle valve system. Part of Nads mods. Has made a huge difference. But didn't help with over heating. Exhaust temp only around 300 degrees, water temp up on boiling. Starting to think about turbo maybe? Not sure what I have missed. Any thoughts much appreciated. Thanks.