42lb injectors
Burning Brakes
Joined: Aug 2011
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From: Odessa TX
Acct Suspended APR 2026 by request
Joined: Dec 2010
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2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
if you have enough pump/injector and you are running a return style system you can have the base pressure lowered... remember the higher the fuel pressure the lower the pump will flow, so by lowering the pressure your pump will not have to work as hard thus it will flow more... you can't go too low on the pressure otherwise the pump in the passenger tank will not be able to pump gas to the driver side tank... you don't have to do this, just some food for thought and it would probably be best to talk it over with your tuner and get their opinion... usually people who do this are boosted and have the regulator referenced so they will actually gain 1psi of fuel pressure per pound of boost and/or they are using a boost a pump this way the pressure will never fall under high fuel demands
Last edited by StingrayRebel; Jan 17, 2016 at 12:59 PM.
Le Mans Master
Joined: Aug 2005
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From: CA.
St. Jude Donor '13-'14-'15
LS injectors are rated at 4 bar approx. 54 PSI however most aftermarket injectors are rated at 3 bar 43 PSI---So you must re-scale your injector flow rate in your tune to compensate----- A 42 LB injector rated at 3 bar becomes approx. a 48 LB injector on a LS engine--
