well got some flushing eco friendly stuff and flushed it thru the intercooler then ran soapy hot water thru to flush, well i was surprise to see how much more water can go thru now like maybe 1 litre yesterday now many more litres. actually it is heavy compare to when i first started, must of had a lot of ports pluged. now time to reinstall. and clean up. f350 2004 200,000km. AE fuel/oil/air filter. thinking of more stuff to mod. this forum is very helpfull and i enjoy it. thanks for all the good feed back. Alain from alberta canada.