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Message: [QUOTE="IdahoF350, post: 1075736, member: 2989"] Definitely not, but your post thoroughly supports the idea that an A-code is making more power per cc than hybrids. Where are the Hybrid supporters to show Hybrids making more than 510hp, and up to 590hp from 200/80, or even a 200/400 for that matter, to show Hybrids are so vastly superior? How about 606hp to 702hp from 238/80+ or 637hp to 738hp with 250/80+? I've searched, those injectors aren't making those numbers at with 80, 100 or even 200 nozzles, in fact the bigger you go the less power per cc the Hybrids appear to make, just like the A-codes. My observation with HPO is that at 65% max duty cycle on the IPR, the stock 15 degree pump on my 130cc injectors was popping ICP codes, and my current tune ups the maximum IPR duty cycle to 85% to resolve the loss of pressure, I'm now at 2600+/-psi above 2500rpm. So the pump has the volume, but the IPR flow was too high. Surely the change to the 17 degree pump was to avoid increasing the IPR duty cycle to make the added volume needed for the 150cc injectors. As far as the nozzles, yes, the pressure drop will have a big effect on the flow rate. Simple standardized flow calculations, divide the new pressure by the old pressure, find the square root of that number, multiply the old flow rate by the square root number you just found. Dropping the pressure from 22,400psi to 16,000psi will drop the flow rate through the nozzle. If the nozzle flows 175cc/min at 22,400psi (obviously I don't have an exact number because I don't build injectors and also don't have access to specific nozzle flow data) the same nozzle would only flow 147.9cc/min at 16,000psi. Conversely, if the 175cc/min nozzle was flowed at 16,000psi, and increased to 22,400psi it would flow 207.1cc/min. So the higher injection pressure through the nozzle will equal more flow through the same exact nozzle, and that further supports Tim's prior statements. [/QUOTE]