Butler Performance Electronic Fuel Injection Kits

Complete Kits starting at $3,595.00

With EVERYTHING you need for an EFI conversion
Kit includes:

F.A.S.T. XFI fuel injection system
E.F.I. Fuel Pump w/filter and regulator
Sensor Kit
4 barrel throttle body
Fuel Rails
Edelbrock EFI ready intake
(EDL-50565 or EDL-29575 Intakes)
Complete wiring harness
Ready to run fuel and timing maps available for many applications
(so the EFI novice can bolt this kit on and be ready to run)

Can be used with Edelbrock's EFI ready intakes or we can do
an EFI intake conversion on the intake of your choice (including sheet metal)

Click here for electric fuel pumps for fuel injection systems


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505 ci. 805 HP on pump gas

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"Here’s the one electronic fuel injection system with truly revolutionary features and capabilities in an easy-to-use package. The FAST™ XFI™ system precisely balances fuel, air and spark. Plus, it allows you to fine-tune like never before. The XFI™ system comes with easy-to-navigate software that’s completely configurable and allows you to set the priorities. With 400% faster processing, no more flat spots in the power curve or settling for “close enough.”

XFI™ features revolutionary Qwik Tune™ technology that lets you preprogram up to four different EFI profiles. Then — with the flick of an in-car switch — you select the power characteristics you need! Additionally, a surface-mounted computer board and billet ECU enclosure give the XFI™ superior durability in even extreme performance applications. Whether you’re a novice tuner or a seasoned pro, the FAST™ XFI™’s unrivaled power, ease of use, and industry-leading technical support make it an unbeatable choice for your next high-performance EFI engine project."


  • 400% faster processing yeilds ultra-precise tuning for power and consistency
  • EZ Test enclosure lights signal proper operation with a quick glance
  • billet enclosure and shock-resistant circuitry provide superior durability


  • Tuning Wizard help feature and on-board diagnostics eliminate uncertainty
  • Field-flasable capability means future updates can be easily downloaded
  • C-Com XFI tuning software is easy to navigate, even for the first tuners


  • Quick Tune - switch selectable profiles enable tuning without a laptop
  • Engine specific, plug and play wiring harness makes installation simple
  • Industy-leading FAST tech staff provides unmatched product support


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