Case in point. I have significantly modified my low pressure fuel system. In fact, I've completely redesigned it. I have pages and pages of experimental data and design data showing every subsystem being tested individually and together. Only the absolute finest components and assembly techniques were used in making this system. Now, if I go into the dealer with a blown CP-3 or a bad injector, I'm betting they take one look at my system and say "that's the cause, your warranty is void" without so much as a glance at my data.
It all comes down to the individual opinion of each dealer. Some are very "bomb friendly". Most are not.
It is good to consider these things before making modifications.