C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Fuel pressure

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Old Dec 17, 2013 | 05:18 PM
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JJLovell's Avatar
JJLovell
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From: Troutman NC
Default Fuel pressure

I've installed the SLP runners, SLP triple cold air, hypertech ignition goodies, 170 degree thermostat, Spec clutch and heavy flywheel. A Borla catback and had a chip burned by Harris in NC. He said I could run up to a 26 lb injector. I've decided on the blue demon 24 lb. and while I've got it apart am installing an adjustable regulator. Its a stage 2 chip, changed fan turn on temps,car runs real good right now am hoping the injectors make a seat of the pants improvement..Its a 1990 coupe, 6 speed... What should I set my regulator pressure at?
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Old Dec 17, 2013 | 07:47 PM
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It really depends on what flowrate was set in the programming. If he set it at 26, and you have a Bosch blue 280-155-715 that flows 24.4 lbs I would start at 48 to 50, and watch blm counts with a scanner. Counts below 128 are rich, so you turn pressure down, and above 128 means you need more pressure. The stock pump is only good to 50 psi. It should have been programmed to a specific injector.
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