I was wondering I just got a smarty for my 04 and it has Don Ms mildest injectors. Do I need to download the updated software from mads for aftermarket injectors since they are so low HP gain?

 

You don't need to with the smaller injectors, but it probably wouldn't hurt to give it a try.

 

I have Don's stage 1. I use The orginal smarty set on one with timing.
love it. my truck is 05.

 

I was wondering the same thing myself. Flux 1's only being 40hp, is it better performance wise to run stock or aftermarket tune. aftermarket tune from what I know just cuts back the timing some due to larger injectors flow and duration acting like a timing increase. Are these injectors "small" enough to not create " too much timing" on stock tune?