,ps had a dam noise which sounds like a stuck hydrolic tappit/bad cam lob/stuck injector to a piston hitting the head , but yet the engine idiols 10percent better then the old 2.8 head ,and rev responce is deferntly better,pecent 14.7afr on idiol ,didnt sleep too well last night thinking about this knocking noise , i had a bit of thinking and came up with a easy idea (should have thought of this first off) ,,,this may sound odd but very effective,,,, i used a screwdriver(one end in my ear and the other end touching things around the clyinder head, found the dam noise within 5mins ,, and the noise is , the injectors,,,,,nothing bad , as u see from the early pics , the back 3 injectors have steel bodys on them which are pulseing/echoing threw the clyinder head ,,i only put 3 small bits of rubber to try it and bingo all the noise instaintly went ,,,, fueling set up ,but it will soon be back with a safer 20psi