The AEM V3 standard controller kit is the boost-dependent brain of an AEM water/methanol injection system. Its on-board internal MAP sensor reads boost up to 35 PSI and injects fluid progressively in proportion to boost. The V3 housing has large, turn-resistant knobs and larger numbering for setting accurate start and full-activation points, a molded-in barbed nipple for the boost hose, a covered status LED and test button for splash resistance, an integrated fuse, and molded mounting tabs. A color-coded, positive-lock wiring harness eases installation. Controller kit only.
Specifications
| Type | Water/methanol controller kit (controller only) |
| Version | V3 standard, boost-dependent |
| Boost trigger | On-board internal MAP, up to 35 PSI |
| Control | Progressive (proportional to boost) |
| Harness | Color-coded, positive-lock |
| Part Number | 30-3304 |
Documents: Warranty (PDF) | Installation Instructions (PDF)
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
