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Message: [QUOTE="6.0 Tech, post: 1374332, member: 23001"] My fuel pressure dropped on stock injectors, stock pump, blue spring on idp xtreme street. It would drop to 20 or so getting on the highway. Had about 40k on the pump and blue spring and i was religious about filter changes. I would do the primary every 10k, and both every 20k, as i had a bunch of primary filters from pump changes. How old is your pump? If its newish, i would say put a regulated return on, and retry it while checking pressure. From what i have read/heard the issue is with the regulator, not so much the pump. Changing to an aftermarket pump that flows more will help with pressure drop to a point, as it will be able to flow enough.to keep pressure up. With my air dog and blue spring, pressure was 65ish at idle, would bounce around.some due to the regulator, and would typically drop to 55ish, but sometimes all the way down to 45. Again, this was based on how the regulator was feeling that day. I put the driven regulated return on, and pressure is solid at 65 at all times, and i bumped injector size from 190 to 205 when i putthe return on. Hope yhat helps some. [/QUOTE]

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