Killshot 2 Pro

4-bbl TBI system with an external ECU for classic engines up to 650 hp

Killshot 2 Pro EFI System

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Kit Types Explained

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Save 5% automatically when you purchase a Fuel Kit, Top End Kit, or Master Kit!

  1. 1. Standalone Kits
    Perfect if you already have a high pressure fuel system (43 PSI+) and want to use your stock ignition or if you already have an aftermarket distributor. (Note that a distributor must be locked out to run timing control.)
    • Includes the following:
    • Throttle body
    • ECU
    • Handheld or Bluetooth Module
    • Full Harness
    • Sensors
    • Accessories
  2. 2. Fuel Kits
    Perfect if you want to use your stock ignition or if you already have an aftermarket distributor. (Note that a distributor must be locked out to run timing control.)
    • Includes the following:
    • A complete Standalone Kit
    • A Fuel Delivery System of your choosing
  3. 3. Top End Kits
    Perfect if you already have a high pressure fuel system (43 PSI+) and want to run timing control.
    • Includes the following:
    • A complete Standalone Kit
    • A Magnetic Distributor of your choosing
    • An AC2008 Ignition Coil
  4. 4. Master Kits
    These include everything you need to go from carb to EFI and run timing control.
    • Includes the following:
    • A complete Standalone Kit
    • A Fuel Delivery System of your choosing
    • A Magnetic Distributor of your choosing
    • An AC2008 Ignition Coil
Interface Themes
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Kit Type:
Throttle Body Finish: Black

Throttle Body Finish

Controller Option: Bluetooth Module

Controller Option

In stock
AS2212P-B-BT
Sale price$869.99 Regular priceMSRP $1,189.99
Order within --h --m --s for same-day shipping. Orders must be placed by 3:00 PM ET.

Product Info

The Killshot 2 Pro is the ultimate evolution of our throttle body EFI lineup, built for enthusiasts and racers who demand more from their engine management system. By combining everything users love about the Killshot 2 with advanced tuning features, dual-quad capability, and upgraded hardware, the Killshot 2 Pro offers unmatched performance, flexibility, and control in a single intelligent package.

At the core of the Killshot 2 Pro is a 32-bit, high-speed ECU with support for up to 1,200 horsepower in dual-quad configuration (second unit sold separately). Each throttle body includes four 100 lb/hr fuel injectors, easily supporting up to 650 HP in single-unit form. Thanks to its integrated 3-bar TMAP sensor, the system handles up to 27 psi of boost, making it ideal for turbocharged and supercharged applications.

Core Features

  • 31x31 VE, Fuel, and Spark Tables: Greater resolution for fueling across the full load and RPM range
  • Closed-Loop Learning with Expanded Resolution: Improved learning accuracy for street and mild builds
  • Built-In Fuel Pressure Sensor: Real-time fuel pressure data at your fingertips, no need for external gauges
  • Progressive Throttle Linkage: Smoother part-throttle drivability and superior pedal feel
  • Boost Control & Fuel Level Inputs: Future-ready for software unlocks like boost solenoid control and dash integration
  • Supports up to 650 HP (single) / 1,200 HP (dual-quad NA)
  • Four 100 lb/hr fuel injectors per throttle body
  • 3-bar TMAP Sensor – Supports up to 27 psi boost
  • Built-in Fuel Pressure Sensor – Live data for accurate fuel control
  • Progressive Throttle Linkage – Smooth response at any speed
  • TPS Output – For transmission controllers, nitrous activation, and more
  • Compatible with all 4150-flange 4-barrel intake manifolds

Whether you’re upgrading from a carburetor or stepping up from a basic EFI system, the Killshot 2 Pro gives you everything you need to fuel, tune, and dominate with confidence. It’s the perfect solution for serious builders who want the reliability of modern EFI with the power and simplicity of a throttle body system. 

Simplicity, affordability and power: that’s the kind of combination you can only get by betting on Aces.

Hold your horses

Supporting up to 650 HP and expandable to 1,200 HP by using a dedicated secondary unit, the Killshot 2 is capable of holding down the fort, and the horses.

Boost it, baby.

The Killshot 2 Pro has a built-in 3-bar TMAP sensor that allows you to run draw-through or blow-through setups and support up to 27 lbs of boost.

Twice the Killshot. Twice the resolution.

Introducing the 3rd generation of our 5" Handheld, now in full 1080 HD. This new generation of handheld is built on a 64-bit RISC-V core processor. This means that graphics load faster, clearer, and smoother, much like a modern smartphone.

If the shoe (throttle body) fits

The Killshot 2 still uses the common 4150 style flange found on many classic engine manifolds, making it very versatile when it comes to compatibility. As long as the TBI unit fits, is within the appropriate HP range, and your engine uses a classic distributor, it's a match made in heaven...or the garage.

Know with the flow

A built-in pressure sensor gives you real-time, accurate fuel pressure readings at the throttle body, ensuring optimal performance and peace of mind. No guesswork, just precision.

How do I set up and program my system?

Interface Options

Our EFI systems are self-learning for most stock-to-mild engine builds. You’ll use one of the included interface modules (depending on the option selected at purchase) to complete the initial setup and make adjustments on the fly. The startup wizard will prompt you with 6–12 setup questions, after which the self-learn feature takes over.

Additional fine-tuning may be required later, depending on your specific build.

Bluetooth Module

Compatible with Android and iOS* devices and plugs into the CAN connection on the main harness.

Android is available via download here, or in the Google Play Store Fall of 2025.
iOS is available Fall of 2025

5" Handheld (3rd Gen)

  • Capacitive touch screen
  • 64-bit processor
  • 1280x720 resolution
  • Cable connection via main harness

8" Handheld (1st Gen)

  • Capacitive touch screen
  • 64-bit processor
  • 1280x800 resolution
  • Wifi chip for software updates via the internet
  • Cable connection via main harness

Most common questions

Quick answers to our most common queries for this product.

Built by the Aces community

Customer Builds

See how Aces customers are using this EFI system in real-world builds.

Built by the Aces community

Killshot 2 Pro Customer Builds

Browse every published build associated with this EFI family.

1 / 2
  • 5 stars: 46 (84%)
  • 4 stars: 3 (5%)
  • 3 stars: 1 (2%)
  • 2 stars: 0 (0%)
  • 1 star: 5 (9%)
Some of the reviews shown are from related products the merchant grouped with this one.
K
Kevin McPherson (United States)

just upgraded from Killshot Gen1 to Killshot Pro 2 for couple reasons. 1 Being needed to have drop down air cleaner for my 454 big block stuffed in a 69 Camaro. 2. because I have total faith in this product.
Still using my 7inch display just set it to Gen2 and it works great
As always was a breeze to install and Love the PDM was a great idea!
Set up for auto tune fired right up first try. Drove neighborhood for 15 minutes then got out on faster speeds 45/55mph for a while hummed along fine. Cruised back home shut her down fired right back up with the turn of the key next day drove to a car show about 20+ mile one way cruised around 70ish :) sat at show for a few hours then cruised home worked great.
Went out this morning fired right up after a few cranks!!
Thanks Again Very happy with the product and your service also.

S
Shon Newton (United States)
Black / Tank Conversion Pump Module w/20' PTFE Hose / Ford 351C/429/460 BBF

Didn't ship the complete order, I've reached out to customer service. Had on response that it would be looked into. That was over a week ago. I've sent several emails since with no response....if this is the support I can expect, I'm considering returning the whole kit for refund.

J
Joe Acacia (United States)

Aces killshot 4 bbl efi. System arrived promptly, quality appears excellent, even packaging was excellent. Tech support was great very courteous and professional, overall I am extremely pleased with the purchase and experience. Thank you very much

J
Joseph Waliser (United States)

Installed it on our 69 mustang Mach 1, Super good quality very impressed. liked it so much I bought a blackjack distributor for the 351w, 2 high rollers and a fusion kit to go on my 67 mustang coupe with factory 390. If I Had more cars that needed them I'd buy more. Highly recommend.

J
James ackley (United States)

Finally got to try to start my 351w sleeper build. I could not get it to start using the "race cam" in the wizard. I have a edelbrock 7182 cam equivalent (.498/.520 224/234 .050 and only 10" vacuum at 1000rpm. Had to put it to stock cam to run. My msd distributor gear height was off and caused the distributor to move 22 deg off. Couldn't figure it out until I seen all he plug wires move and engine sputter and die.

Waiting on New distributor gear and we shall see how she runs. Building my timing table now so she should run great i hope!

R
Rob (United States)

I think the Killshot TBI is great. It is simple to install and even had a fuel pump relay and fuse. It looks great and setup was simple. There are downsides to it. EFI is loud and this thing is especially loud. The injectors make a clicking racket that is loud enough to hear inside my truck. (1976 Dodge D100, 5.9 magnum, carb intake, tube headers, 5 speed, 3" single exhaust) Next big mod: sound insulation on the firewall!

A
Anonymous (United States)

Super clean and easy to work with it’s for sure a total upgrade

A
Alex meza
100%

The best kit I ever bought. The instructions are very clear to read. And for the price, it’s the best. I highly recommend.

S
Steven

I ended up not installing this and returned it. Im here to sayvthatvthe return process was wasy and painless. They even paid for shipping. Aces has great customer service. If I ever do another build, I will definitely use Aces.

J
Jorge

Looks exactly as in the pictures! Its well built! Delivery was fast! No damage to the contents inside! All the 8 boxes were packaged properly. Now Im just waiting to test this product in my vehicle. Overall great product so far!

P
Parker

Wasnt on the vehicle 3 weeks and already having issues with ecu. Customer service is horrible, just giving the run around.

K
K.W.

Great product cant wait to install everything looks well made

K
Kevin

Just what I wanted thanks

J
J.C.

Killshot 2 Pro “Back to life Kit” plus in Tank Pump and Evil Energy Fuel Cell swap

1968 Chevelle 383 Stroker

Build quality seems solid. Takes a lot longer to install when youre solo, so plan on a weekend project if its your first EFI install. Pretty impressed with the overall performance and simplicity of the wiring and PDM. However, my kit is missing the the bluetooth module.

Would have been 5 stars if the instructions mentioned the PDM wiring… maybe they do but my kit was missing instructions and had to download from their website.

All things are possible through Youtube and ChatGPT.

c
casey stapletion (United States)

can i use my stock distributor. it has control module in it. its on a 94 350

B
Brandon

Great kit worked great replacing my TBI on my 1988 Silverado

J
Joseph

Everything was packaged well and arrived early.....very impressed with aces and can't wait until spring when I can install my unit and try it out.

K
Kevin

Its what I wanted thanks

R
Ryan

Working well so far!

R
Rueben Mahnke (United States)

Great packaging, all parts look awesome. I won’t be installing for quite some time, just wanted to get the sale kit while it was there.

j
john tignor (United States)
Black / Tight Fit In-Tank Pump Module / 289/302 SBF

Very well packaged! All parts are present and look to be of great quality and design. It will be a while before I install it as my project isn’t ready for it, but I have watched countless YouTube videos n the kit that I doubt I will have any issues.

J
Joe Dittmar (United States)
Black / Command Center 2 Surge Tank / SB LA 273-360

I had parts missing from my order.i emailed customer service on 12/4 and the issue is still not resolved on 12/16. I guess I should have bought another brand.

D
Derek Brown (United States)

I’ve been keeping an eye on these systems for a while, when Black Friday deals rolled around I decided to pick one up. This is my first time messing with any of these types of systems so I had no idea what to expect as far as ease of install and first crank. I bought this system for a BBC 454 large cam, AFR heads 10.5 to 1 compression, and dual plan intake making just under 600hp. I was really tired of the cold starts on the carb with the gas needing constant feathering until it was fully warmed up and a few other issues I wanted to solve. So, install actually went pretty easy. Aces has a lot of documentation on their website that you can review as well as videos to watch. I recommend reading and researching these before install if this is your first time. Complete install of fuel system and injection system took about 5 hours total. No major hiccups or issues. After install flushed the lines a few times and connected and primed the system to check for leaks.I have the 7” handheld system so I did the initial start wizard and zeroed the TPS and it cranked right up first try. It had a rough idle for the first minute but, once the O2 sensor came online it smoothed out. After that I adjusted the throttle body , did a rezero on the TPS, pulled some fuel out of idle and it cranked right up no issues held idle did a quick drive drives decent for no tune. I plan to work on the tune some this coming week. Overall I am very satisfied thus far with the system. It’s as easy as they make it out to be and seems it will fix all the issues I was having with the carb. As long as it has longevity which time will only tell I fully recommend the system . Like I say I do recommend reading all instructions that come with the system and going online to review all the documentation and videos there if this is all new to you. Their YouTube videos help explain a lot much better.

J
Jack

Looks great. I can't wait to install it.

r
richard (United States)

Like the unit and am upgrading to Killshot II.