AMS Performance Stage 1 Direct Injectors are an upgrade for the VR30DDTT direct-injection fuel system in the Infiniti Q50/Q60 3.0t and 2023+ Nissan Z, addressing factory injector limits that appear even at moderate power, especially on ethanol blends like E85. Built from brand-new OE-manufacturer HDEV5 direct injector cores with VR30-specific overmold and rail features for perfect OEM fitment — no fuel-rail or electrical adapters required. Set of 6.
Specifications
| Brand | AMS Performance |
| Stage | Stage 1 |
| Type | GDI direct injectors (OE HDEV5 core) |
| Fitment | Direct OEM replacement (no adapters) |
| Quantity | Set of 6 |
| Application | 2016+ Q50 / 2017+ Q60 3.0t; 2023+ Nissan Z (VR30DDTT) |
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