Honestly I don't think you have to worry about your injectors dying or whatever....and you can always use an injector cleaner that you put into your gas tank, that will clean them. I really don't have a perfect answer for you, but I wouldn't be worry about your injectors not lasting.

 

like any mechanical device, they can fail, but if operated in a manner in which they were designed, 80% duty cycle or less, they should out-last your engine. If operated in the high 90% range like a Cobb stage 1 or 2, or vishnu stage 0 or 1, their lifespan is kind of an unknown. out of all the cars i've owned, I had 1 injector fail in an 1987 Saab and that was over 150,000 miles.