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Injector question?

Old 06-13-2018, 11:07 AM
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JBJrC4
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Is it required to have an adjustable fuel pressure regulator with 22lb Bosch 3s on a stock 91 L98? Or can I keep the stock fuel pressure regulator?

Last edited by JBJrC4; 06-13-2018 at 11:07 AM.
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Old 06-13-2018, 11:32 AM
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Kevova
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The stock regulator should be ok.
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Old 06-13-2018, 11:17 PM
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aklim
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Unless you run out of injector and have the ECM tuned for it, I would just stick to the stock regulator. I heard the theories of better atomization with higher pressure but I am not aware of tests that prove the gains are significant under street conditions. Sure, if you were racing for a living, I'd push anything that gets me a thousandths of a second.
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Old 06-14-2018, 11:22 PM
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Originally Posted by aklim View Post
Unless you run out of injector and have the ECM tuned for it, I would just stick to the stock regulator. I heard the theories of better atomization with higher pressure but I am not aware of tests that prove the gains are significant under street conditions. Sure, if you were racing for a living, I'd push anything that gets me a thousandths of a second.
Nothing like that just want it to run like it did from the factory. I'm replacing the Bosch 3 yellow/orange injectors with the grey Bosch 3 22lb. I'm receiving them tomorrow. Just wanted to know if I could keep the stock regulator.
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Old 06-15-2018, 08:12 AM
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aklim
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Originally Posted by JBJrC4 View Post
Nothing like that just want it to run like it did from the factory. I'm replacing the Bosch 3 yellow/orange injectors with the grey Bosch 3 22lb. I'm receiving them tomorrow. Just wanted to know if I could keep the stock regulator.
You could but I'd change it just to be sure. The rubber diaphragm is old.
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Old 06-15-2018, 08:14 AM
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Yes you can run the stock one.
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