Wild Card Sequential EFI Master Kits (500 HP)

SKU: AY0437
Sale price$1,759.99 Regular price$2,772.52
Save $1,012.53

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Includes the following free items!
Bundle Options: Bundles Explained
Pump Module Type:
Manifold Style & Color:
HP Level:
Power Distribution Module (PDM) + $99.99

Add a PDM to protect your system and clean up your wiring! See details here

Pressure Sensor Kit + $119.99

Add a PSK for precise pressure monitoring and enhanced performance! See details here

$1,759.99
$2,772.52
175999
277252
Technical support

Wild Card

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Wild Card

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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.

Plug 'n' Play

Not a tuning wiz? You don't need to be since we provide a wizard for you. Our self-learning* functionality means you only have to answer a few basic questions in the startup wizard and then the ECU takes care of the rest. After about 30-60 mins of idling and drive time, the system will build it's own tune so you don't have to. Click here to learn more about our handhelds and dashes and see all of their features.

*Self-learn works best for stock-mild applications. For more aggressive applications and even some stock-mild applications, we offer free tuning software on our website.

BLACKJACK Pro Ignition Coil

- Primary Resistance:0.273Ω
- Primary Inductance:2.63 MHz
- Secondary Resistance: 3.42kΩ
- Secondary Inductance:15.77 Hz
- Output (50pF load): 47 kV
- Output Energy:150 mJ
- Peak Secondary Current:100 mA +/-7%
- Arc Duration: 200 uS
- Turns Ratio 78:1

Powerful ignition

The Gambler Pro Series Billet Distributor features a high-quality, CNC-machined black anodized aluminum body and hardened steel shaft, guided by a sealed ball-bearing on top and a sintered steel bushing on the bottom to ensure stability up to 10,000 RPM.

Performance injector and fuel rail

Aces EFI has designed its fuel injectors to meet the performance needs of all enthusiasts. Aces offers injectors in 36, 65, 80, 100, and 211 lb/hr flow rates for everyone from the basic cruisers to all-out race cars.

Fuel rails are CNC-machined from billet aluminum and topped off with a black anodized, They include the necessary hardware and fittings for installation.

Best Performance Intake

- operating RPM up to 8,000
- 500hp, 36lb/hr injectors, 800hp, 65lb/hr
- 4-bbl throttle body
- 92mm,102mm drive by cable billet throttle boday
- billet aluminum fuel rail with black anodized finish

Pedal to the metal...

Wild Card Top End and Master Kits come equipped with either a single blade 92/102mm throttle body or 4 barrel throttle body.

It takes two.

The Wild Card EFI 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.

Versatile Fuel Module Options

Tailor your fuel delivery system to match your specific requirements with a choice of Fuel Module Systems, allowing you to optimize fuel flow and pressure for maximum engine performance.

255 In-line Fuel Pump System with PTFE Hose

Aces’ 255 In-line Fuel System is a complete gravity-fed fuel delivery kit to provide the proper fuel supply for most aftermarket EFI systems. The system includes the fuel pump, fuel pressure regulator, liquid-filled fuel pressure gauge, 100-micron pre-filter, 10-micron fuel filter, 40’ of –6 Teflon™ (PTFE) lined fuel line for the highest strength and resistance to gasoline and alcohol-based fuels, 6AN-8AN-HOSE Assmbly Tool, and all necessary fittings for a complete installation! This system is designed to match the power potential of EFI systems up to 650 HP. Aces’ 255 In-line Fuel System takes the guesswork out of acquiring the correct fuel system components for your EFI-equipped vehicle.

System Features:

•Complete EFI Fuel System with high quality Teflon™ (PTFE) lined –6 AN hose and all necessary fittings
•255 LPH In-line fuel pump
•Fuel Filters
•Adjustable fuel pressure regulator with gauge
•Supports EFI applications up 650hp
•6AN-8AN-HOSE Assmbly Tool for easier installation of the syste

Command Center 2 Surge Tank

- Single high-volume 340LPH pump
- No needle seats or floats to get hung up or stuck!
- Can be mounted in multiple positions from vertical to horizontal
- Built-in 58 Psi Regulator no need for external regulator, can be switched to 43.5Psi regulator

Tight Fit In-tank Pump Module (255 LPH)

- Installs in almost any tank with a depth of 6 to 12 inches
- Low profile design for maximum clearance from the vehicle's floor pan
- Unique O-Ring 360-degree mounting flange for unlimited mounting options.
- Single high-quality 255 L/PH fuel pump for engines producing up to 600 HP.

Tank Conversion Pump Module (340 LPH)

- Can go from 14 in. deep pump to 6 in. by cutting tube
- Available with 340 LPH (89 GPH) fuel pump
- O-ring style 360-degree mounting flange for ease of maintenance
- Internally regulated

Product Info

Wild Card Sequential Multi-Port EFI System

Take your classic V8 engine into the modern era with Aces EFI’s Wild Card Sequential Multi-Port EFI System—a fully customizable, true sequential injection system designed for most classic 8-cylinder engines. Unlike traditional TBI setups or competitor systems that use bank-to-bank injection, Wild Card delivers precise fuel metering at each cylinder for superior throttle response, better fuel distribution, and increased power across the RPM range.

Total Customization for Your Build

Whether you’re running a Small Block, SBF, or even a Mopar (coming soon!), Wild Card’s customizable firing order setup in the start wizard ensures compatibility with a wide range of classic 8-cylinder engines. This system requires a 7+1 timing setup, ensuring accurate ignition control.

More Than Just EFI – A System Built for Performance

Wild Card is available in three configurations to match your build and power goals:

  • Standalone System – Includes ECU, wiring harness, handheld controller, and basic sensors to get you running.
  • Top-End Kits – Adds an aluminum intake manifold (black or raw finish), Gambler Series distributor, ignition coil, injectors, throttle body, and fuel rails for a complete fuel and ignition upgrade.
  • Master Kits – Includes everything from the Top-End Kit plus a fuel delivery system of your choice for a full EFI conversion.

MP-EFI vs. TBI: Why Multi-Port is Superior

Throttle Body Injection (TBI) may be easy, but it can't compete with the precision of Multi-Port EFI (MP-EFI). TBI sprays fuel above the throttle blades, leading to uneven fuel distribution and weaker throttle response. In contrast, Wild Card’s true sequential MP-EFI meters fuel cylinder-by-cylinder, optimizing fuel economy, power, and drivability.

Built for Your Needs – Stock to High Performance

Power Levels: Available in 500 HP and 800 HP configurations.

Self-Learning: Stock to mild builds benefit from self-learning, while more aggressive setups can be manually tuned with our full tuning suite.

Injector Options: Choose between EV1 or EV6 style injector harnesses for compatibility with your fuel system.

Throttle Body Choices:

  • 4-bbl throttle body includes a 1 BAR MAP sensor (for naturally aspirated applications).
  • Single-blade throttle bodies come with a 2.6 BAR MAP sensor (for boosted applications).

Dual Wideband O2 Sensors: Ensures proper fueling across both banks for ultimate performance and efficiency.

Manifold Fitment: Designed for OEM block and head configurations (may not fit all aftermarket heads).

From daily drivers to track beasts, the Aces EFI Wild Card is the modern solution for your classic V8, offering unmatched precision, tunability, and performance. Upgrade to a smarter fuel injection system today and experience the difference of true sequential Multi-Port EFI!

Features:

  • 32-bit software (OEM standard) that manages input/output signals, voltage, and RPM faster and more consistently than competitors.
  • 5” full-color touchscreen handheld with built-in GPS speedometer.
  • Integrated coil driver for ignition timing control (when using Aces’ coil and distributor).
  • Simple calibration wizard for initial setup - no laptop tuning required.
  • Self-learning fuel table.
  • Dual fan control.
  • Step retard for nitrous control.
  • Boost compatibility (using laptop software).
  • Free laptop software available for pro applications.
  • Compatible with Aces’ handhelds, dashes, CAN modules, and TCMs.
  • Bosch 4.9 WBO2 sensor.
  • Works with CDI Ignition (Aces High Roller CDI box or MSD style).

Wild Card vs. The Joker

Both of these systems are designed for classic engines and for use with a 7+1 Distributor. The comparison chart below primarily shows which features the Joker has that the Wild Card does not.

Wild Card EFI (Standalone)
Wild Card EFI (Standalone) Translation missing: en.product.price.savings Save$700.00 Sale priceFrom $599.99
The Joker EFI (Standalone)
The Joker EFI (Standalone) Translation missing: en.product.price.savings Save$750.00 Sale priceFrom $799.99
RPM Rev Limiter

Nitrous Retard

Built-In CDI

Burnout Rev Limiter (2-step)

Things to know

& other FAQs.