If its a powerstroke, then he is talking about putting an oil line from head to head so that it has the pressures are even. its an easy deal. just look it up on powerstroke .org
We just put one in my buddies 7.3 along with rr return and crossover,new injector o rings,the ccv mod,and the 50 cent mod on the under the valve cover harnesses.and it idles way smoother and quieter then my truck cant say it did anything for power though. If i was just going to do one of them it would be the fuel crossover to get rig of inj 8 dead head. O also put the 99 e van wicked wheel in the turdblower.
Are you chipped?
We just put one in my buddies 7.3 along with rr return and crossover,new injector o rings,the ccv mod,and the 50 cent mod on the under the valve cover harnesses.and it idles way smoother and quieter then my truck cant say it did anything for power though. If i was just going to do one of them it would be the fuel crossover to get rig of inj 8 dead head. O also put the 99 e van wicked wheel in the turdblower.