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From Drag Times, "Sequential Central Point Injection (SCPI)

GM refined the CPI system into a sequential central port injection (SCPI) system in the mid-1990s. It used valves to meter the fuel to just the cylinders that were in the intake phase. " By all acounts, as much use as a cat-flap in a parachute, apparently .

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Q: What IS scpi fuel system?
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