Are Corvette injectors rated at 3-bar or 4-bar fuel pressure, and how do I scale the IFR table for 30 lb Ford SVO injectors at LS1 fuel pressure?
Here is what the documentation says. Each point links to its source; tables and names vary by computer, operating system and tuning software.
- E38, E67, P01, P59, Terminator X; LM7, LQ4, LQ9, LS1, LS3, LS6; 1999-2013: Fuel injectors are rated at a specific differential fuel pressure, most commonly 43.5 psi (3 bar) and 58 psi (4 bar); effective flow rate at any other pressure scales with the square root of the pressure differential. (LSX Magazine)
- E38, E67, P01, P59, Terminator X; LM7, LQ4, LQ9, LS1, LS3, LS6; 1999-2013: When sizing injectors, confirm the selected flow rate at the fuel pressure the system will actually run, and account for a boost-referenced regulator raising base pressure proportionally with boost. (LSX Magazine)
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Confidence: medium — sources disagree or are limited; check the sources below.
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