many gm dual injector tbi systems have two modes, one where both injectors fire in a pattern left and right, and one where both fire together. there is usually an rpm threshold for this so at higher rpm they fire at the same time.
many gm dual injector tbi systems have two modes, one where both injectors fire in a pattern left and right, and one where both fire together. there is usually an rpm threshold for this so at higher rpm they fire at the same time.
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