Injector rattle..whats it mean?

[cj performance]

the injectors in my truck are getting super..super loud.. however last time i had it on stock tune it went away..
Is it my tune?mostly does it when i let off the throttle.. stops when i press the brakes..

[O2ShootTheJ]

Its the 310 tune. If you drop down to the 275 most of it will go away.

I'm not sure if its bad for the truck or not but it sure doesn't sound good

[cj performance]

its progessively getting worse

[Pmac21]

I know this is an old thread, but my injectors are very loud. I know its common on the bigger tunes (I normally run 275) but is the rattle going to hurt anything? What causes it? Will bigger injectors help? Thanks in advance.