M.F. Kustoms, L.L.C.
Holley 558-128 Upgrade
Want to make your Holley install even more seamless? Want to use all your factory sensors?Send us yo..
$175.00
Holley ECU Extender
This product allows you to move your Holley ECU to a location of your choice without modifying your ..
$300.00
Holley ECU Testing
Holley ECU Recovery Service - Firmware Reflash ECU not powering on after a failed firmware update? ..
$45.00
JimStim to Holley Benchtop Harness
This service allows you to hookup your Holley ECU to a JimStim Wheel Simulator.Features: Dual CAN Bu..
$175.00
M.F. Kustoms Sticker
This is a small sticker.... 1" x 2.5"Note:Item will be shipped out regular USPS post if you select t..
$1.50
MFAdapter Ignition Harness
Introducing our MFAdapter Bypass Ignition Harness for Holley EFI, a must-have solution for enhanced ..
$150.00
Stepper IAC Harness
Introducing our Stepper IAC harness for standalone EFI ECUs. This allows the flexibility for owners ..
$60.00
TFI Adapter Harness - 1986-93 Ford Mustang
Introducing our enhanced Ford TFI Adapter for Holley EFI, a premium solution for seamless performanc..
$125.00
Waste Spark Coil Harness
Introducing our Waste Spark Coil harness for Holley EFI. This harness is designed for enthusiasts wh..
$100.00
TFI Adapter Harness - 1994-95 Ford Mustang
Introducing our Ford TFI Adapter for Holley EFI, a must-have solution for enhanced performance and c..
$200.00










