What should my Fuel Pressure be? Installed the Kirban AFPR!
12-21-2006, 08:28 PM
#1
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What should my Fuel Pressure be? Installed the Kirban AFPR!
Well I got my Kirban adjustable fuel pressure regulator to fit. Now with the mods in my signature, what do you guys think my fuel pressure should be set at? If it makes a difference I'm at 5180 ft. altitude.
12-21-2006, 08:42 PM
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RE: What should my Fuel Pressure be? Installed the Kirban AFPR!
I see an intake and cam but no heads. I'm also assuming stock 19lb injectors. I would stick with 40psi with the vacuum plugged. Ford fuel injectors are rated at 39psi. I see that your at a higher elevation which would lean out the engine a hair but the engine has tables to compensate for the atmosphere change. If you do anything at the track or dyno, I'd start with 40 and maybe bump it up to 44 and see if there's a change. If you go too far on the fuel the computer willtake it away. That in turn will lean out your WOT fuel because it's open loop, and the computer bases that table on what it learned in closed loop.
12-21-2006, 08:47 PM
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RE: What should my Fuel Pressure be? Installed the Kirban AFPR!
ORIGINAL: richs347
I see an intake and cam but no heads. I'm also assuming stock 19lb injectors. I would stick with 40psi with the vacuum plugged. Ford fuel injectors are rated at 39psi. I see that your at a higher elevation which would lean out the engine a hair but the engine has tables to compensate for the atmosphere change. If you do anything at the track, I'd start with 40 and maybe bump it up to 44 and see if there's a change. If you go too far on the fuel the computer willtake it away. That in turn will lean out your WOT fuel because it's open loop, and the computer bases that table on what it learned in closed loop.
I see an intake and cam but no heads. I'm also assuming stock 19lb injectors. I would stick with 40psi with the vacuum plugged. Ford fuel injectors are rated at 39psi. I see that your at a higher elevation which would lean out the engine a hair but the engine has tables to compensate for the atmosphere change. If you do anything at the track, I'd start with 40 and maybe bump it up to 44 and see if there's a change. If you go too far on the fuel the computer willtake it away. That in turn will lean out your WOT fuel because it's open loop, and the computer bases that table on what it learned in closed loop.
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