So how do i know what injectors i need? 90 hp 100hp i have no idea...

 

well I'll tell ya. You will always want bigger but along with bigger injectors come everything else Turbo to keep enough air Tranny to hold the power then this n that I would say it really depends on what you do with the truck and how heavy you pull. To big of a injector is hell for pulling heavy loads. Great for pulling but trying to keep it cool is the tough part. Some one else may be able to give you better advice. I just keep buying and trying

 

You will need a modified stage 1 CP3 at the very least and if you want to go 90HP or bigger then a stage 2 or 3 CP3 at the least. Then, along with that, you will need a lift pump capable of at least 30 PSI of supply to that new CP3. Plus, you will need quite a bit more fuel from a different programmer and/or module stack.

BTW, this is in addition to the turbo and trans talked about in the other post.