I have an 05 that has a blown HG. Stock turbo. Not sure how running more boost or bigger tunes to accommodate a bigger turbo is gonna not blow a HG. I thought the gasket type changed for the LBZ and up..... and all the 01-05 trucks have the same type.???
tuning can also play a roll... high cylinder pressure can blow headgaskets. Nothing is an absolute with these trucks. Why have i made 100+ passes at 580-670 hp and not hurt my engine? its a crap shoot... Some guys have cracked pistons on a 500 tune and others have not.