Jackpot 2 LS

A complete standalone ECU, wiring harness, and sensor package designed to control LS-based engine swaps without relying on the factory ECU.

Fully tunable with self-learning fuel control, Jackpot 2 LS gives builders the flexibility to get running quickly and fine-tune deeper when they’re ready.

Jackpot 2 LS EFI System

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Jackpot Version: Jackpot LS - DBC & Manual Trans

Jackpot Version

Injector Harness Type: EV6 Injector Subharness

Injector Harness Type

Controller Option: 5" Handheld

Controller Option

In stock
AS2026-1
Sale price$799.99 Regular priceMSRP $1,139.99
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Product Info

The Jackpot 2 LS EFI System is a standalone engine management system for 1997–2014 GM Gen III and Gen IV LS-based engines that use 58x/4x or 24x/1x crank and cam trigger patterns. It’s perfect for LS swaps or for upgrading and replacing your factory ECU or existing aftermarket EFI, giving you modern sequential fuel and spark control, dual wideband closed-loop learning, and the flexibility to support everything from stock street builds to serious high-performance combinations.


Jackpot 2 LS is designed for builders who want the best of both worlds: a simple, guided setup that gets you running fast, plus true standalone ECU control that scales up to advanced tuning when your build demands it. Jackpot 2 LS is built to keep the install clean, the drivability strong, and the control in your hands.


For stock and mild builds, the setup wizard and self-learning fueling strategy help eliminate the intimidation factor of tuning. For serious performance builds, the free Aces laptop tuning software unlocks full manual control and calibration refinement.


Core Features

  • 32-bit Automotive-grade CPU, right in the ECU

  • Equipped with full self-learning capability AND full manual tuning

  • Dual Mac 3-point Boost Solenoid Control*

  • Overboost protection

  • Transmission control for select GM 4-speed transmissions:

    • 4L60E ('96-'03)

    • 4L65E ('96-'03)

    • 4L67E ('96-'03)

    • 4L80E ('94-'03)

  • BOTH Drive by Wire and Drive by Cable compatibility

  • Compatibility with EITHER EV1 or EV6 connectors based on selection at checkout

  • Full Knock Control to prevent engine damage

  • Dual fan control

  • Compatibility with BOTH 24x and 58x reluctor wheels

  • Dual Wideband O2 sensors included

  • Fuel Level Monitoring included

  • Operated by Aces Handheld, or the iOS or Android device of your choice (with selection of Bluetooth Module at checkout)


Whether you’re dropping a reliable 5.3L into a vintage pickup or pushing a track-focused 6.2L, the Jackpot 2 LS ensures a clean installation, superior drivability, and absolute tuning control. Engineered for real builders executing real swaps, it guarantees transparent compatibility and an installation completely free of surprises.

Value, reliability, and simplicity: that’s the winning combination you get when you bet on Aces.

*Will be available via a free firmware update in development

Computing Power

A robust ECU that utilizes our OEM standard 32-bit architecture. This allows the system to manage input/output signals, voltage, and RPM faster and more consistently than our competitors.

Self Learning & Fully Tunable

Not a tuning wiz? We provide the wizard, so you don't have to be. With Jackpot 2's self-learning* functionality, just answer a few basic questions in the startup wizard, and then the ECU takes care of the rest. After about 30-60 minutes of idling and drive time, the system will build its own tune so you don't have to.

For advanced users and boost control setup, you can use our free tuning software to access even more customizable settings.

*Self-learning works best for stock-mild applications. For more aggressive applications and even some stock-mild applications, manual tuning is recommended.

Control Freak

Boost Control

Looking to boost your ride? While all of our other second-generation EFI systems support single solenoid control, the Jackpot 2 goes above and beyond with dual Mac 3-port solenoid control*. Never worry about dangerous overboost again–our safety features will detect it and drop pressure automatically. Our self-learning features will even pull timing as it sees boost, for smooth, safe acceleration. Of course, you can always use our advanced tuning software to take it to the next level if you have the chops.

*Boost Control is currently disabled in the firmware, but will be added via a free firmware update in the summer of 2026.

Transmission Control

While manual transmission compatibility comes with each of the Jackpot 2 LS systems, select versions also include trans control for the following GM 4-speed transmissions:

  • 4L60E ('96-'03)
  • 4L65E ('96-'03)
  • 4L67E ('96-'03)
  • 4L80E ('94-'03)

ETB Control

Whether you need drive-by-cable, drive-by-wire, or both in one, the Jackpot LS EFI system has you covered.

See the compatibility list here.

** Select systems include sub-harnesses for both 6 and 8-pin pedals.

Additional Control Items

24x & 58x Reluctor Wheel

Whether your LS engine is 24x or 58x, the Jackpot 2 gets the job done. It comes packaged with wiring harnesses for both variations, and can be easily configured for compatibillity with either reluctor wheel type.

Pre-terminated EV1/EV6

Whether your LS engine has EV1 or EV6 connectors, Aces has you covered. Our wiring harnesses come pre-terminated with the connectors of your choice, so you don't have to worry about any fiddly splicing.

2 WBO2 Sensors

The Jackpot LS system utilizes two WBO2 sensors to read each bank of your V8 engine. Dual wide-band sensors allow precise calibration of each cylinder bank, optimizing performance and allowing more thorough tuning of your engine without any compromises.

Fuel Level

Worried about losing your fuel gauge to an aftermarket EFI setup? Don't be. With your Aces Handheld Controller or app, you'll be able to see your fuel level at all times.

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.

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 the main harness
Kit Options

Most common questions

Quick answers to our most common queries for this product.

Product comparison

See the primary differences between the Jackpot LS Lite and the Jackpot 2 LS.

Jackpot 2 LS EFI System
Jackpot 2 LS EFI System Sale priceFrom $689.99 Regular price$989.99
Jackpot LS (Lite)
Jackpot LS (Lite) Sale priceFrom $549.99 Regular price$829.99
MCU Generation

Gen 2

Gen 1

Tuning Tables

31x31 resolution in the fuel, VE, and self-learn tables for each bank.

10x14 resolution in the fuel, VE, and self-learn tables.

Fuel Level Input

Yes

No

Boost

Integrated Boost Control with Dual Solenoid Control.*

*Boost Control is currently disabled in the firmware, but will be added via a free firmware update in the summer of 2026.

Boost Compatible, but no integrated boost control.

WBO2 Sensors

Utilizes two O2 sensors. One for each bank.

Utilizes one O2 sensor

Wiring Method

Uses the Aces Power Distribution Module by default

Has relays built in for the fuel pump and fans

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

Jackpot LS Customer Builds

Browse every published build associated with this EFI family.

1 / 5
  • 5 stars: 79 (78%)
  • 4 stars: 6 (6%)
  • 3 stars: 3 (3%)
  • 2 stars: 3 (3%)
  • 1 star: 10 (10%)
Some of the reviews shown are from related products the merchant grouped with this one.
Q
Quincy Davis (United States)

After sitting on the phone over an hour James got my situation resolved and had great customer service and patience to get my order correct

N
Nick Mallory (United States)
DBC & Trans Control with 5" Handheld / Cathedral Port / Mid-Rise (black/cast)

It’s not installed yet, however all the components are very super nice quality. Very excited.

J
Joseph Freeman (United States)
DBC & Trans Control with 5" Handheld / 500 HP Tall Fabricated Intake / Cathedral Port

Great price with the Black Friday deal and fast shipping. Everything was packaged really nice but still working on the motor so I haven’t installed anything yet.

D
Daniel Lara (United States)

Have had my jackpot system for a few months now. And I can definitely say this system is great for its price!! I like the easy install, with everything labeled its kinda hard to mess up i feel. Fired up first try been running on the wizard with some minor adjustment on the handheld. I will definitely buy another system when I build another LS.

T
Tyler (United States)

Before you believe a negative comment on here ask yourself can the person leaving the review follow instructions to install this system one mistake can make it not work correctly and they jump on here with the tech support bs they aren’t going to come to your house and do it for you follow the instructions get it to start and run then tune it doesn’t tune it’s self it’s a good product I’ve had mine nearly 2 years zero issues (I ran mine for a year before I had a remote tune done it ran good you just have to mess with it to get the AFR correct)

B
BrendonAlec (United States)

Bought my Jackpot just over a year ago & between everyday driving to long distance from Mo. to NC with not one issue. Once a problem did arise after a yr+ time had past (absolutely my fault) I sent in my equipment as asked & got back it back working again. Very helpful across the board from the emails to phone calls to mailing!! Thanks Again

J
Justin (United States)

5.3 Topend kit 🤌

S
Steve (United States)
Drive by Cable & Manual Trans / EV6 Injector Subharness / 5" Handheld

So far we haven't gotten this thing sorted out yet. The engine continues to run after the key is turned off.
The PDM looks like a real nice idea but, you have to cut up and modify the wiring harness to connect it. That's not a good way to start out.

1
1991 s10 space cruiser (United States)
LS1/LS2/LS6 Short Fabricated Intake Top End Kits 500HP (DBC & Manual Trans)

love it you can tell you guys put in the time this kit rocks ,the quality is top notch ,the ease of the wiring ,the hardware, the touchscreen,,off of the part have the exact Fitment I was looking for ,,the cherry on top the price , you can tell you do it out of love so thank you!!!!.I have used fi tech ,holley , Edelbrock and your kits hold there own ........!!!! everyone look out ace is the real deal,and now I can compete in some real competitions ty ill send pics soon ps it learned my cam with ease and grate drivability ,the power omg crisp throttle , built ,5.3 cam , ace injection , super t10 4 speed , 3,42 posi 1991 gmcSonoma

C
Charlie dean
Awesome

One of the easy ways to do a LS swap glad I picked this system high quality looks amazing wiring is a breeze

T
Trevin
Amazing

Don’t waste your time or money working with another system. Installation was very easy and the system had my engine running how it should have with the other management systems I’ve used. Had I known the quality and ease of use of the jackpot system I wouldn’t have been wasted the time or money on anything else. Great job on these kits!

M
Mike
C3 Vette LS Swap

Installed a LS3 6.2 crate motor in a C3 Corvette. Looked at all the options for engine management and landed on the Aces Jackpot LS system. Aces had a compact ECU, dual O2s, DBW, and trans control needed for the build. Main harness is nicely loomed with plenty of length, quality connectors, and all wires are clearly labeled. After plugging in all the sensor, connect 4 wires - pwr, gnd, pump, acc and it’s ready to run. The setup wizard is super easy using the 7” screen. Car started up within seconds on the second crank and settled to my target idle. This system is the best value on the market for an LS swap.

T
Tim Coleman
LS C-10 Truck Swap

First the product was readily available when competitors was not. It came quickly very nicely boxed with everything labeled. Nice cloth loom. Very descriptive manual and labels. No for the company and their supporters. I got my truck going and headed to PTTS and the guys at the aces tent were amazing in support and helping with tuning. They were not satisfied until we got some issues resolved and it purred all the way home from bowling green to southern Indiana. I can not thank Bradley Woodall enough for his help. Long story short I completely recommend this stuff!!

R
Rodney Prouty
The Jackpot is a winning hand

I have used this kit on my own protiuring car.. a 1968 camaro.. and it has proven to be reliable and easy to use

T
Tony
Jackpot for LS Exceeds Expectations

Installed Jackpot for LS on (2) swaps, 6.0 in Foxbody and 5.3 in OBS truck, both performed well, and can't beat the price - very happy with Aces EFI!

Tony in Berthoud, CO

R
Ryan Thomas
Great EFI system LS Jackpot

I got this Jackpot EFI unit to replace the stock Corvette 411 computer that I put into my Datsun 280Z. The ACES computer is nice and small compared to the corvette computer. A few things that I did not like about the system. The wire harness was very long, with these big plugs for the sub harness wires. The big plugs where designed to go in the rear of the engine. I the Datsun there is no room for them in the back because of how close it was to the firewall. I cut the plugs out of the harness and spliced the wires back together.The wire loom that was over the wires was not good quality. I ended up cutting al the loom off and replacing it with better stuff. I included pictures of before and after the better quality loom. The loom was cut short, so at the ends of the wires was any where from 2 to 3 inches of tape to cover up the short loom. The plugs for the coils where not the same as the stock Corvette, so I had to get new ignition coils. Then the injector plugs are EV6 and the stock ones are EV1. They don't have a wire harness for the stock injectors, so I had to get some adapters from Ebay. Those would be nice to have included in the kit or have the option to pick what injectors and coils you are running. the oxygen sensor wires are very long also. I would recommend that the wire harness has the option to come none terminated at the ends fro the people who want the length to be custom to make it all fit and look good.The wires had very big white labels on them. It made it easy to know where they went. But after you plugged them in there was this big label there that I had to cut off. I then wrote with a sharpee on the plugs what they went to.There was another big plug that has all the loose wires on it. Again, I cut that off and then just connected the wires that I need for my setup.

Now for the good:

The instructions are very nice and easy to follow. I like that they included the wiring diagrams for this system, very helpful. The user interface on the touch screen is great. The setup was easy, I just answered a few questions and then the car started right up and ran great.I like the two wide band oxygen sensors that come in the kit. It does take a few more rotations of the engine to start than the Corvette computer. I liked the included rubber mounts for the computer. The kit came with it's own relays and two inline fuses. I got the upgraded 7 inch screen, which is nice. I mounted it to the front of my dash for now while I tune the engine, then I will remove it after that.

Overall this is a great system. I am glad I got it and I will get another one for my next project.

This Jackpot EFI system is great, Thank you.

F
Francisco Ledesma
Ls jackpot kit

Bought the jackpot and harness kit for my car. Easy to work with and quality parts ! 5 stars !

L
Lataven
Ace jackpot efi

This is truly a great system very easy to install and the wizard is so easy to understand if I can do it anyone can great job! Aces you guys are awesome and the customer service and tech team are so helpful, if you need a system Go Aces !!!!