Popular Categories
Killshot Fusion features a fully integrated ECU built into the throttle body, reducing wiring, simplifying installation, and delivering reliable performance in any environment.
Shop Now
What we offer
Everything you need to upgrade, tune, and take control—whether you're converting from carb or building a high-performance EFI system from the ground up.
Ditch the carb and upgrade your classic or modern engine with one of our easy-to-install EFI systems. Whether you choose our Throttle Body Injection (TBI) kits for their affordability and simplicity, or go all-in with Multi-Port EFI (MPEFI) for maximum tunability and horsepower potential, we’ve got the right fit for your build.
TBI systems like the Killshot or Deuces Wild offer a retro look with modern reliability—perfect for street cruisers and weekend warriors. If you're after finer control, sequential injection, or running boost, our Wild Card and Royal Flush multi-port systems give you the tools to unlock your engine’s full potential.
Not sure which to choose? Our detailed guides and real-human support make finding the right system quick and painless.
Running a late-model LS, LT, HEMI, or other modern platform? Our Jackpot Series EFI systems are built to give you full control of your high-performance engine with modern tuning, expandability, and seamless integration.
Choose from TBI or Multi-Port EFI options depending on your goals—whether you’re swapping into a restomod, dialing in a boosted setup, or just want a cleaner, more tunable alternative to factory electronics. All Jackpot systems support both 24x and 58x crank triggers, are boost-ready, and are compatible with drive-by-cable or (select models) drive-by-wire setups.
From the streamlined Jackpot Lite to the fully featured Jackpot LS Pro, you get support for transmission control, sequential injection, multiple O2 sensors, and more—all without needing factory ECUs or complicated re-flashes.
Aces delivers a full lineup of performance components to support your build from top to bottom. Pair your EFI kit with CDI ignition systems, high-energy distributors, coils, and manifolds that are engineered for seamless compatibility and serious spark.
Want to go deeper? Our Top End and Master Kits bundle everything you need—from throttle body to fuel delivery—taking the guesswork out of custom builds. Whether you're piecing together a street machine or assembling a boosted track car, we offer the parts, packages, and support to do it right the first time.
Everything we make is designed to work together, so you spend less time troubleshooting and more time turning the key.
Shows & Events
Check out all of the events we attend throughout the year and make sure to stop by and see us!
See allVideo reviews
From the People
Justin Richardson
1932 Roadster @AcesFuelInjection Killshot Fusion
Proto-Tech LLC
Bryant Stilwell
Aces EFI Fusion! Throttle Body Comparison
Nomadic Dyno
@wasatchtruckfarm
Aces EFI killshot fusion 1967 c20 Chevy
Photo reviews
From the people
Morgan Cook
Morgan Cook's stunning 1964 Dodge Polara
Michael Krozell
Mustang + Royal Flush combo is just that
Nick Waag
1947 coupe, running a 350 (and a Killshot of course)
Rob Morse
EPIC 1950 3600! Classic 6.0/4l80 swap rockin Jackpot system
Adam Wichers
1986 Toyota Corolla AE86 GTS. Running a 5.3 LS powered by the Aces Jackpot system.
Jerrod Keating
Running the Jackpot, and he told us it started and ran on his very first attempt after install.
Customer Experience Video
Josh’s ‘87 R10
Jim Corman's '91 Foxbody Running the Killshot Top-End Kit
Ari with a BT-Module installed on her Monte Carlo SS
Killshot 2 on a Shelby Cobra.
Enjoy the Power of LS with the Aces Jackpot
Jackpot LS Showing off in California
Rock Crawlin' in California!
Nova + Killshot = Epic
Better Off With A Royal Flush
TestimonialLouis' 1948 Chevy Thriftmaster
Blog
What’s the Difference and Which One Is Right for Your Build? As our lineup has expanded, the Gen 1 vs Gen 2 question comes up constantly. Builders want to know what actually changed, what it means ...
Idle Air Control (IAC) Setup and Tuning Guide
IAC IAC: What is it, why do we use it, and how do we tune it? Today, we want to go over the Idle Air Control (IAC) and how it works. The IAC is the equivalent of a controlled vacuum leak that works...
Transmission VSS Setup The purpose of the VSS correction is to ensure that the ECU accurately calculates vehicle speed based on the transmission reluctor ring. This allows the ECU to manage shift ...