Katech + XDI Direct Injection Bundle

When it comes to unlocking the true potential of your Gen V LT engine, fuel flow limitations can be a major roadblock. Even with larger cam fuel lobe, and a low side boost-a-pump, it doesn't take long before the stock mechanical fuel pump, injectors and low-side pump struggle to keep up with the fueling needs from ported blowers, more boost, and E85. Although the benefits of Direct Injection are clear, taking your LT4 from a stock 550rwhp to the all to common 850rwhp + requires an investment in fuel volume availability. Luckily, the bright minds at Katech and XDI have created some turn-key solutions to help us meet our goals, and have generated power levels over 1,500 horsepower on gasoline and 1,300 horsepower on E85 in Katech’s rigorous in-house testing using these parts combinations. Assembling into a single turn-key package helps us pass on up to a $1,100 savings when purchased together, allowing you to invest in tuning, tires, and other support mods!

Katech Goliath High Pressure Fuel Pump;

When it comes to unlocking the true potential of your Gen V LT engine, fuel flow limitations can be a major roadblock. Even with larger cam fuel lobe, the stock mechanical fuel pump often struggles to keep up with the fueling needs from ported blowers, more boost, and E85, but the Katech Goliath High-Pressure Fuel Pump is here to change the game. This meticulously engineered, modular solution has already proven itself by supporting over 1,500 horsepower on gasoline and 1,300 horsepower on E85 in Katech’s rigorous in-house testing.

The Goliath pump is more than just a Katech product; it’s the result of a powerhouse partnership with Stanadyne. As a globally recognized leader in fuel system technology, Stanadyne brought its vast expertise to the table to make this project a success. The collaboration ensured the Goliath would meet the highest standards of quality, reliability, and performance. This pump isn’t just about making power; it’s about consistency and dependability when you need it most.

The Goliath pump boasts a 12mm bore size and up to 220-bar operating pressure, making it the perfect match for aggressive higher HP builds. Its improved spring design ensures performance even at extreme RPMs. Unlike OEM and competing pumps that can struggle to keep up, the Goliath’s enhanced volumetric efficiency means it can keep up with cam lifts over 8mm. Whether you’re on the track or tearing up the streets, the Goliath has your back.

Benefits;
-Direct bolt in for all GM Gen. V LT Engines.
-Larger 12mm bore size for 10% added volume.
-Up to 220bar operating pressure.
-Improved spring design for superior high RPM stability.
-Improved Volumetric efficiency over OEM and competing pumps.
-Capable of over 8.00mm cam lift.

Katech Dual Drop In Low Side Fuel Pump;

Engineered to cater to the needs of Gen 6 Camaro and CTS V3 enthusiasts. This fuel pump module was meticulously designed to accommodate twin OEM grade high-output fuel pumps. This sealed drop-in fuel pump module retains ALL FACTORY FUNCTIONALITY, including low-level fueling performance which no other solution on the market has. You can operate this fuel system on the road course with factory low-level fuel performance unlike the aux pump and unsealed module solutions currently on the market.

Low Level Fuel Performance:
KAT-A7838 guarantees uncompromised performance under all conditions. By retaining the factory low-level fueling prowess and incorporating a venturi system, the fuel module ensures a continuous flow of fuel at all fuel levels, outpacing even the most demanding scenarios. Conquer lateral G-forces and unleash your vehicle's true potential with the assurance of consistent, full-throttle fueling. Note that this venturi system matches the performance of the OEM system, it is always suggested to keep your fuel level above E when possible in high performance driving scenarios.

Seamless Integration:
No drilling or bonding in fittings required. Experience a hassle-free installation and a seamless transition to enhanced fueling capabilities. The Katech Lowside Fueling Solution is engineered to be a true drop-in solution, retaining factory connections for a plug-and-play experience. The primary OEM grade high-output fuel pump is controlled by the factory FPCM.

Power Potential:
KAT-A7838 kit doubles your fuel capacity. With this configuration, our fuel module is poised to support 1000rwhp on E85 in a factory returnless setup.

Leak-Free Design:Our solution guarantees a leak-free experience without any drilling or bonded fittings, preserving the integrity of your vehicle's fueling system.

Flexible Control: Exercise total control over the secondary pump using the control solution of your choice, or seamlessly integrate with our Katech twin pump PWM controller.

Factory Compatibility: Retain the essence of your factory setup with our solution, preserving the returnless fuel system, fuel level sender, EVAP functionality, and tank connections.

Requirements to Run this module:
To use the Katech Lowside Fueling Solution, a post-pump fuel filter (5-10µm, stainless or micro fiberglass, E85 rated) is required.

The KAT-A7815 Plug & Play Controller/Harness allows for a seamless integration with no cutting or drilling required.

Kit includes:
KAT-A7763 - 2016+ Gen 6 Camaro/CTS-V3 Dual Fuel Pump Module
KAT-A7815 - PNP Harness/Controller

XDI Fuel Injectors;

As you know, High-Flowing Fuel Injectors are a major component to High HP builds on a Direct Injected platform like the LT4. Although there are several manufactures to choose from, you can always count on Griffin-Motorsports carrying the highest quality and most trusted products on the market. Which is why we only offer XDI Fuel Injectors. Built upon the foundation of the original GM LT4 injector, they provide a straightforward drop-in installation with minimal adjustments to existing ECU injector characteristics. Each injector undergoes meticulous testing at 100bar and 200bar on OEM equipment at XDI, ensuring precise flow matching within ±0.5% for consistent performance. Tested on fully instrumented engines for superior cylinder distribution and stability at pressures up to 3000psi, these injectors are fully E85 compatible, making them a versatile choice for performance enthusiasts.

XDI 30+ Injector Specifications;

• Static Flow Rate: 23 g/sec (2000 cc/min @ 100 bar)

  • 50% more flow than production LT1/L86 injectors (15.3 g/sec)

  • 30% more flow than production LT4 injectors (17.7 g/sec)

• Max Rail Pressure: 221 bar / 3000 psi

• Fuel Compatibility: all known fuels, all Ethanol blends

• Electric Connector: Bosch EV1

• Driver Profile: XDI, tuning changes needed

• Tuning Support:  Standalone, HPT, MoTeC

• Idle Stability: 0.8 ms at 20 bar

• Static Flow Reference: 10 ms at 100 bar

• WOT Performance and Stability: 6 ms at 200 bar

• Tuning Support: Compatible with HP Tuners and standalone ECUs

XDI 50+ Injector Specifications;

• Static Flow Rate: 26.6 g/sec (2300cc/min @ 100bar)

  • 73% more flow than production LT1/L86 injectors (15.3 g/sec)

  • 50% more flow than production LT4 injectors (17.7 g/sec)

• Max Rail Pressure: 221 bar / 3000 psi

• Fuel Compatibility: all known fuels, all Ethanol blends

• Electric Connector: Bosch EV1

• Driver Profile: XDI, tuning changes needed

• Tuning Support:  Standalone, HPT, MoTeC

• Idle Stability: 0.8 ms at 20 bar

• Static Flow Reference: 10 ms at 100 bar

• WOT Performance and Stability: 6 ms at 200 bar

• Tuning Support: Compatible with HP Tuners and standalone ECUs

XDI 70+ Injector Specifications;

• Static Flow Rate: 30.1 g/sec (2600cc/min @ 100bar)

  • 70% more flow than production LT4 injectors (17.7 g/sec)

  • 2600 cc/min at 100 bar

  • 3700 cc/min at 200 bar

• Max Rail Pressure:193bar / 2800psi

• Fuel Compatibility: all known fuels, all Ethanol blends

• Electric Connector: Bosch EV1

• Driver Profile: XDI, tuning changes needed

• Tuning Support:  Standalone, HPT, MoTeC

• Idle Stability: 0.8 ms at 20 bar

• Static Flow Reference: 10 ms at 100 bar

• WOT Performance and Stability: 6 ms at 200 bar

• Tuning Support: Compatible with HP Tuners and standalone ECUs. Note: Manual cars may experience significant pressure overshoots after shifting, which can cause misfires. Reducing pressure may be necessary in these cases.

Applications;

•High horsepower GM Gen V V8 and V6 direct injection engines including LT4, LT1, L86, L83 and LV3
•E85 conversions of GM Gen V V8 and V6 engines
•2014-2019 C7 Corvette (LT1)
•2015-2019 C7 Z06 Corvette (LT4)
•2016-2022 Camaro SS (LT1)
•2016-2019 CTS-V (LT4)
•2020-2024 CT5-V Black Wing (LT4)
•2017-2023 ZL1 Camaro (LT4)
•2014-2023 Silverado and Sierra with 4.3L LV3, 5.3L L83 and 6.2L L86 engines Not compatible with 6mm shaft injectors
•2015-2023 Suburban, Tahoe, Yukon and Escalade with 5.3L L83 and 6.2L L86 engines Not compatible with 6mm shaft injector

For Higher Output Applications
XDI LT4 +70% Injectors are recommended for naturally aspirated (e.g., Nitro-Methane), low-RPM turbo applications, or centrifugal superchargers when combined with the LPE Big Bore pump or Katech Goliath. Important: The LPE Big Bore + LT4 +70% injectors will not meet fueling demands for setups with a 2650 TVS or Whipple blower on straight E85. In these cases, we recommend the XFP3200 + 70% injectors or supplemental fueling (methanol, PFI) around peak torque. Planning for more than 1,000rwhp? Then ask us how we can help set you up with a TooHigh PSI Port System to supplement your Di System.

*Global B ECUs may require extra tuning on a case-by-case basis as we learn more about new models. We do not accept returns due to tuning difficulties, but we’re happy to assist with any technical inquiries.

All performance figures are estimates only, assume a fully supported setup, and competent tuner who has experience tuning XDI products. Your results will vary. Final rail pressure should be determined by your tuner. Injectors are non-returnable.

Injectors may ship direct from XDI.