Store is currently CLOSED, until we catch up on PREVIOUS ORDERS. Sorry!!!!!!!!!!!!!!!!!!!!!!!!

EFI Wiring Specialist

At SMI, we specialize in professional EFI wiring solutions. From custom harnesses to one-of-a-kind electronic modules.

Lifetime Warranty MAP Sensors

  • Potted 3 Bar MAP Sensor GEN 3 CAR STYLE - LS1 LS2 LS6 LS7
    Regular price
    $49.99
    Sale price
    $49.99
    Regular price
    $59.99
    Unit price
    per 
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Holley Terminator X Systems

  • Holley EFI CAN TO USB DONGLE - COMMUNICATION CABLE/ Tuning Cable 558-443
    Regular price
    $73.85
    Sale price
    $73.85
    Regular price
    Unit price
    per 
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  • Holley EFI TERMINATOR X MAX ECU ONLY, No Harness 554-153
    Regular price
    $1,087.95
    Sale price
    $1,087.95
    Regular price
    Unit price
    per 
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YES, WE HAVE HOLLEY CAN SPLITTERS

We have tons of Holley EFI CAN splitters in stock, and more being made every day!

Buy here

7" Digital Dash Fuel Level Harness

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Holley EFI CAN Connectors available!!

Visit our store listing

GM Alternator Information!!!

Read it here!