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454/502 MERCURY MAG MPI ECM UPGRADE

Mercury 454/502 Magnum

Price: $495.00

  • 454ci (330HP) 
  • 454ci (385HP) 
  • 502ci (415HP) 

Select the engine displacement

  • MEFI 1 
  • MEFI 3 (+$100.00)

Select which ECM type you have

Are you wanting more out of your 454 or 502 Mag MPI engine? Whipple engineers have developed a custom calibration for all 454/502 MPI's that maximizes the engines power capacity by increasing the RPM limit, increasing spark advance and modifying the fuel curve to give your boat a cleaner transom and a better performing engine. By optimizing the spark curve for 91 or better fuel, Whipple was able to extract 25HP more while not sacrificing stock reliability. The recalibration also features a 5400rpm limit over the stock 5100rpm which gives you plenty of prop choices. Whipple offers many custom calibrations for built and highly modified engines.

 

GM Part # MEFI Type
16159919 MEFI-1
16189069 MEFI-1
16220371 MEFI-1
16234539 MEFI-1
16237009 MEFI-3
16236999 MEFI-3

 

Engine Control Module Identification
     
Model Serial Number ECM Type
MCM 454 Mag MPI 0L010029-0L085399 MEFI-1
MCM 454 Mag MPI 0L085400 and Above MEFI-3
MIE 454 Mag MPI Horizon 0L002200-0L086049 MEFI-1
MIE 454 Mag MPI Horizon 0L086050 and Above MEFI-3
MCM 502 Mag MPI 0L017000-0L085432 MEFI-1
MCM 502 Mag MPI 0L085433 and Above MEFI-3
MIE 8.2L MPI 0L002450-0L086012 MEFI-1
MIE 8.2L MPI 0L086013 and Above MEFI-3

 

*NOTE: PCM'S MUST BE SENT TO WHIPPLE SUPERCHARGERS FOR CALIBRATION SERVICE ALONG WITH RECEIPT, NEW PCM'S ARE AVAILABLE UPON REQUEST. TURN AROUND IS NORMALLY 1-3 DAYS.

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