I recently had some issues with cylinder airmass g readings and was playing with injector data and timing. I pulled a injector today to read the model # and it turns out they are focomo 18lbs @ 3bar. Tsp sent me the wrong size, I ordered 42lbs @ 3bar and scaled them for it. So my car is running 18lb injectors with the 42lb scaling. What I dont understand is the car is not running lean at all, duty cycle is at 40%(Probably will change if scaled down) and runs pretty good. It made 411hp on a mustang dyno last year with these injectors. I also have a 340lph pump.
My question is this, do injector companies reuse the injector body/ housing and just add different parts in them? How is the car running good with smaller then factory injectors? Are they just stuck open dumping fuel at WOT? Is my fuel pump working overtime at WOT?
I bought them at texas speed last year they were supposed to be FIC 42lbhr @3bar, hopefully I can return them and get the right ones because these are not worth the money I paid for them.
Car is a H/C 04 gto