I owned 5, still own one. All my hot-rodding on those engines involved cramming as much n/a air into the intake WITHOUT using a Banks turbo. Hood scoop, modified filter covers, everything I could do except go with a K&N air filter. The K&N filters let too much dirt pass though and cause scoring in the combustion cylinder for my standards.
Messing with the fuel injection distributor pump is like playing with fire, you WILL get burned. Either the injectors, or other tender parts will get damaged. All you will do is push through fuel that won't get burned anyways because there isn't enough air to burn the extra fuel.
In a nutshell, those are my experiences with the 6.2L GM diesel. I've had friends that put on a Banks, watched as their fuel economy went into the toilet without any significant surge in power. Were they faster than mine? Yes. Was it worth the money they spent? They thought not. I reliably got 21 to 23 mpg with my three M1009's, 16 to 18 mpg with the M1010, and 15 to 17 mpg with my M1031 that I still have.
Just my thoughts.....
Firearms stand next in importance to the Constitution itself. They are the American people’s liberty teeth and keystone under independence. — George Washington