I don't know if you guys have ever sent your injectors to be serviced but one such company is right in my town. Mr Injector.

I brought a set of 80 pph Big Block Chevy injectors to him yesterday for his cleaning service I used before. Injectors come back with new filters appropriate gaskets for TBI and flow rates before and after. From memory I seem to remeber about 7% increase after service.

So we started talking about what GM rates injectors and how fuel pumps are GPH. Well we are going to do all GM injectors as I have them and we will get some true numbers.