We are BACK. 2025 is going to be wild!!

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

  • $49.99
    $49.99
    $59.99
    Sold out

Holley Terminator X Systems

  • $73.85
    $73.85
    Sold out
  • $1,087.95
    $1,087.95
    Sold out

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!!

We have nearly 1000 Male Mizu connectors in stock, with terminals! These are becoming VERY hard to find, but we are STOCKED UP! We also have information regarding a budget crimping tool for these.

Visit our store listing

GM Alternator Information!!!

All the late model GM alternator information you could ask for!!

Read it here!