Grand National | ID1300-XDS | Injector Dynamics | 1300.60.14.14.6

The ID1300-XDS (1335 cc/min at 43.5 psi) set of 6 injectors is crucial for high-flow Buick V6 builds. It provides the flow capacity for forced induction E85 setups well into the 700 to 850+ wheel horsepower range, offering maximum safety margin for race-prepared 3.8L engines.

Yes, it is a direct fit. This ID1300-XDS set is configured to the universal 60mm O-ring to O-ring length required for the 3.8L V6. It installs directly into the factory fuel rail and manifold bosses without requiring spacers.

Yes, adapters are required. The ID1300-XDS uses the modern USCAR connector. The factory Grand National harness uses the older rectangular EV1 (Minitimer) connector. You will need six USCAR to EV1 PNP adapters (ID P/N 90.1) for a clean, non-splicing electrical hookup.

Injector Dynamics provides comprehensive characterization data, including Dead Time (Latency) and Flow vs. Pressure tables (based on ID1300x2) on their support site. This data is critical for accurate fuel calibration in the Buick V6 PCM, especially for preventing boost cut and achieving reliable wide-open throttle (WOT) fueling.

Since the ID1300-XDS is new and flow-matched, the issue is most likely the factory fuel pump or a clogged fuel filter. High-flow injectors require a much larger volume of fuel. The original pump often struggles to maintain the correct fuel pressure (9-13 psi base) under heavy boost and high flow demand, leading to hesitation (fuel starvation).

Yes. The all stainless steel internals provide extreme resistance to heat and corrosion, ensuring that the injector's precision and flow matching are maintained under the severe thermal and pressure demands of a turbocharged 3.8L engine running performance fuels like E85.