AFIS Injectors - Gen-2 Methanol Injectors - AFM 250 LB/HR, 6 Pack
The Right Amount of Fuel at the Right Time
Designed for serious racers, AFIS injectors deliver the fuel your setup demands—whether you’re running pump gas, race fuel, ethanol, or methanol. Trusted by drag-and-drive teams, heads-up racers, and bracket car competitors, AFIS has spent the last decade helping hundreds of racers dial in the perfect injector combination for maximum performance and consistency on the track.
AFIS Gen-2, 250 Injector Data
Fuel Pressure
Operating Base (static) Fuel Pressure - 40-85 PSI
Maximum Base (static) Fuel Pressure - 90 PSI
Minimum Pulse Width at 43.5 psi
13.5 volts 1.35 milliseconds
16.0 volts 1.05 milliseconds
Injector Driver Minimum Requirements
8 amp Peak
1 msec Peak Hold Time
2 amp Hold
Notes
1. Base (static) fuel pressure is the fuel pressure without a boost or vacuum reference.
2. Operating the fuel injectors outside of the designed base (static) fuel pressure range will result in improper injector function.
3. An external injector driver is required on most EFI systems (including HP & Dominator ECU).
4. The Holley driver PN 554-142 is recommended (Position 7) with AFIS Injectors.
5. Injector drivers (internal or external) must have a minimum peak hold time or 1 msec; this is not programmable on all ECUs or external drivers
6. Peak Hold Time is the amount of time the driver will stay at peak current before dropping to hold current (not the same as Peak Timeout).
| Injector | Fuel | Duty Cycle | Voltage | |||||||||||||||
| LB/HR | PSI | % | 8 | 8.8 | 9.6 | 10.4 | 11.2 | 12 | 12.8 | 13.6 | 14.4 | 15.2 | 16 | 16.8 | 17.6 | 18.4 | 19.2 | 20 |
| 250 | 43.5 | 70 | 1.8 | 1.6 | 1.52 | 1.34 | 1.26 | 1.17 | 1.15 | 1 | 0.9 | 0.82 | 0.76 | 0.68 | 0.62 | 0.54 | 0.46 | 0.38 |
