Skip to product information

XDI High Flow LT4/LT5 Injectors (+30%)

Our first 100% XDI manufactured and tested DI-Injectors are designed for the new GM LT series engines. With a 30% increase in flow over stock LT4 injectors, these supply the required fuel flow for high horsepower applications without the need for auxiliary fuel systems. These injectors are based on the original GM LT4 injector, which makes them a perfect drop in solution. Most of the ECU Injector characteristics stay the same.
Every Injector gets tested at 100bar and 200bar on OEM testing equipment at XDI. Every set gets flow matched to within ±0.5% at 100bar and 200bar fuel pressure !!!

Testing on several fully instrumented engines (8x O2, 8x EGT) done by Katech Inc. has shown unequaled results in terms of cylinder distribution, repeatability and stability at pressures up to 3200psi. Tuning changes required are minimal, offsets and current driver parameters stay the same. The injectors are E85 compatible.

No meth, no PFI, no extra ECUs, no wiring, full control, full OBD Diagnostics.


High horsepower GM Gen V V8 and V6 direct injection engines including LT5, LT4, LT1, L86, L83 and LV3
E85 conversions of GM Gen V V8 and V6 engines

2014 C7 Corvette LT1
2015 C7 Z06 Corvette LT4
2019 C7 ZR1 Corvette LT5
2016 Camaro SS LT1
2017 Camaro ZL1 LT4
2016 CTS-V LT4
2014 Silverado and Sierra with 4.3L LV3, 5.3L L83 and 6.2L L86 engines
2015 Suburban, Tahoe, Yukon and Escalade with 5.3L L83 and 6.2L L86 engines


Rated static flow rate: 23.0g/sec at 10MPa
– 50% more flow than production LT1/L86 injectors (15.3g/sec)
– 30% more flow than production LT4 injectors (17.7g/sec)
– E85 compatible

maximum pressure:
200bar / 2900psi (tested rock solid on engine and roller dyno)
240bar / 3500psi (under perfect conditions, no pressure pulsations)

Tuning Support: HPT