High fuel pressure on stock fpr

 
Old 06-10-2018, 01:13 PM
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Default High fuel pressure on stock fpr

Okay so Iím seeing about 80-90 psi at the rail with a stock fpr. What could cause this?

i have a walboro 450 hardwired to the battery, 2200cc injectors, and an AEM fuel rail.
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Old 06-10-2018, 01:21 PM
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Default Re: High fuel pressure on stock fpr





Hopefully you guys can tell me if I have something horribly fucked up
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Old 06-10-2018, 01:36 PM
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Default Re: High fuel pressure on stock fpr

Your walbro 450 has too much flow for a stock fpr. You need to run an after market fpr for that pump, I recommend an off rail regulator like aeromotive or equivalent.
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Old 06-10-2018, 02:18 PM
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Default Re: High fuel pressure on stock fpr

Originally Posted by boosted94gsr View Post
Your walbro 450 has too much flow for a stock fpr. You need to run an after market fpr for that pump, I recommend an off rail regulator like aeromotive or equivalent.
i have an AEM one but I was trying to figure out that issue.. guess Iíll just throw on my that one then. Thanks!
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Old 06-10-2018, 05:35 PM
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Default Re: High fuel pressure on stock fpr

Originally Posted by bcintron95 View Post


i have an AEM one but I was trying to figure out that issue.. guess Iíll just throw on my that one then. Thanks!
The aem regulator come with 3 different size internal fittings. You probably want to use the largest one with that pump. I wasnít able to run more then 45psi base pressure with my walbro 450 and aem regulator without the pressure jumping around like crazy, so I switched to an off rail regulator and have no problem running 65psi base pressure now.
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Old 06-13-2018, 02:47 AM
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Default Re: High fuel pressure on stock fpr

AEM FPR are garbage. Get one from Aeromotive and your issue should be resolved.
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