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454/502 MERCURY MAG MPI ECM UPGRADE
454/502 MERCURY MAG MPI ECM UPGRADE
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Regular price
$674.15
Sale price
$674.15
Regular price
$695.00
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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 7-10 DAYS.
