well every race engine that I have built I have all ways wire rung it and never had a head sealing issue and that with 2.5 bar held to the red line now I have used cometic gasket that failed at 1.9 bar and every thing was prepped as it should have been and that didn't last but now I have a wrc 4 layer gasket and so far so good its just a different way of doing things its like 4 big injectors over 8 injectors but tuners and people do things that no works for them