SOHC power is a long, costly, unloved path. been there...done that. MY SOHC turbo daily driver just recently died. and when i said DIED, i mean died.
#2 cylinder sleeve declared its emancipation and in the process threw the entire engine assembly into chaos.
YES this was tuned using standalone and NO it wasn't detonating.
happened without any prior warning during acceleration onto the interstate.
i am going DOHC