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I am not familiar with you adjustable raising rate FPR. It sounds like you are trying to calibrate it to work w your chip.
Did Tod give you some specs to set it at?
If not I would assume you would start out at stock fuel pressure settings.
I would first make sure the vac you are pulling is at spec. You just built that motor and there are several things that could affect it.
I would hook the FPR up and test the fuel pressure at idle and blip the throttle to see that it is raising.
I do not know the factory tests for fuel pressure but I thought it was more like 32-36 lbs at idle w the everything hooked up and running.
The other approach is to like you are trying which would be to use the fuel pressure to set idle AFR. To do this everything has to be hooked up with proper vac.
As to the gain or how fast the fuel pressure raises I suspect the starting point is that after idle is set right you would disconnect the vac line to simulate loss of vac like under full throttle and the FPR would be set for the factory spec or a target that Tod set the chip to work at.
Again I assume there are two ways to adjust the FPR. One for base pressure and the other for gain or how fast the pressure raises. You may have to play these two adjustments off against each other to get yor idle pressure/AFR and no-vac pressure where they need to be.
Then you would do your traceability fine tuning where you would play w the gain rate until you hit your target AF's under boost.
For a NA motor the target AF is around 12/1. On a turbo and one that is not running an inter-cooler you may want to target something closer to 11/ under full boost for an added cooling effect. This will cost a little Hp but will be cooler and safer. In the 10's is rich.
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