+1 unless you have a top to bottom built motor and upgraded turbo/s I wouldn't bother. There's better things to invest in such as a full egr delete, waste gate, head studs, etc.I read the title and i'm not sure what you're asking, I know that until you upgrade turbos you aren't touching your fuel limits.
You're fine with your 310 tune. The pump will need to be modded, or you will have to run a dual set-up if you want big nozzles, cutom tunes and huge turbos. You can run 600+ HP with the stock pump. I believe once you get into the high 650+ HP you will need more fuel.As the title says. Got a KEM 310 tune and want to know how much I can throw at her until she goes