It always staggers me that people think they can upgrade injectors and FPR's on hard coded ECU's and think they can get anywhere near optimal power. I'll bet there is a substancial degredation in engine reliabilty through running lean in some portions of the MAP and bore wash in others. Obviously also running less than optimal power.
I run 550cc injectors on my Nissan V6 putting out 519hp to the wheels. It's augmented by an aftermarket ECU and innovate O2. In this instance a LinkPlus G3.