What is a SMPI engine?
SMPI (SEQUENTIAL MULTI PORT INJECTION) MEANS THAT THE CAR'S COMPUTER CONTROLS THE INJECTION OF FUEL IN SEQUENCE WITH THE FIRING ORDER OF THE ENGINE RATHER THAN INJECT ALL THE TIME. ALSO THE COMPUTER CONTROLS THE TRANS SHIFTING, CRUISE CONTROL, CHARGING SYSTEM AND MONITORS ALL SYSTEMS TO OBTAIN THE MOST EFFICIENT OPERATION.I GOT THIS FROM RESEARCHING THE DODGE HEMI SRT8 ENGINE BUT I WOULD SAY MOST OF IT WOULD APPLY TO ALL.BOB
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