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Message: [QUOTE="Tim @ P.I.S., post: 166999, member: 744"] Sorry Jim, But yes. This set we will call used for the sake they were installed in a truck. But from what i was told never left due to issues. So technically they are still new to me. I do remember are conversation on that exact topic way back. And YES again. A big YES also. RPM has a HUGE effect on larger injectors(stg 1 & 2 not as much). That is one issue we have always had with 7.3 injectors. Without certain modifications as RPM increases output decreases. Some just way more than others. It is quite simple to build a standard 238cc hybrid injector. You know this, as well most 7.3 enthusiasts. But on a test bench as we have both learned over the years if you speed it up(increase RPMs) it is nothing more than a glorified stg 2 injector in output. Correct some issues and it becomes a true 238cc injector. Then increase RPMs again and see what happens. Back to a low output again. The best i have seen is to still flow 238cc of fuel out of that injector at 4800 rpms. It was not until 5000rpms that the injector would then start to reduce flow again. Back to this set on hand here. Reduce the rpms to 1000 and stretch the pw out ot 5ms and you would get 250cc. But as soon as rpms increase the output would decrease, drastically on some. Thee were simply not built to empty at any usable RPM. I dont know anyone that drives at just 1000rpm. At a usable RPM they just dont do what they are advertised to do. I am scared to think of the number of people out there that have the same issue and dont even know it. [/QUOTE]

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