I know that SFI means Sequential Fuel Injection but what does it do ? Is the fuel sprayed into the cylinders one by one ?




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good question. sorry i dont have the answer for you



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lol no the injectors are in the intake manifold right where it meets the block. it is a form of multiport injection i think all it really means is exactly what it is called, it squencially lets fuel as each cylinder is on an intake stroke






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Yes it is sequential and it fires the injectors individually . Well at least until you hit a certain RPM range then it switches from sequential to firing 2 injectors at a time . The stock PCM is only sequential at low RPM's .


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