Just avoid them too.

Like the modder scene cares about warranties. Plus dealerships lack the ability to tell when a cpu has been modded (I have friends in the scene, the stuff I've seen them do with CPUs is impressive, dealerships don't have a clue).

Some of these mods are an external box that simply feeds the needed data to the CPU. Remove the box, no problem. Some are done inside (for racing), and you'd be hard pressed to know anythings been changed. Some is just software - good luck proving that's been changed if a cpu is dead (and dead really doesn't happen).

Besides, warranties on car CPUs are virtually meaningless. My family/friends have been in the racing scene since the 60's, and used some of the first electronic fuel injection systems, that were analog (talk about fun to troubleshoot). We've seen a grand total of 2 cpu failures in that time...(one probably from being abused) - these things just don't die.

Don't support the people trying to control everything with this "void your warranty" nonsense. People say this about phones too, it's just a scare tactic.