If I run e85 on a set of injectors for 5000 miles and switched back to regular gas will I be ok or would I find myself with issues?

someone is selling me injectors.

 

The injectors will probably be cleaner than if you ran them with gas.

 

So I am good just put them in my car thats it.

I read a while back that e85 rusts quickly should I worry

 

You will be just fine. E85 doesn't rust. In fact if you tear down an engine that runs E85, you will find that the it is far cleaner than an engine run on gas.

 

X2, there isn't near as much carbon buildup when using e85 and as long as the fueling components are e85 compatible you'll be fine. I am tuning a map for 93 octane pump gas and one for e85 .I will using both and have a friend that already does and no issues have occurred so far and theres no reason there should be any.