You wanna crack 200rwhp pretty bad eh? :22
I think you are thinking too much. I have heard of people deleting it (with aftermarket intakes) but not of using it to richen up the mixture while under power.
I don't know if it is located well to do what you are thinking of anyway.
Personally, I'd use an adjustable regulator to add more fuel under load and when I managed to get my car to make enough power to max out the stock injectors I'd change them to higher flow units.