The FF640 is FlowForce's flagship plug and play injector kit for NA/NB Miatas. Flowing at 640cc in NA Miatas and 725cc in NB Miatas, these deliver clean idle quality plus the headroom for serious street and track builds.
We start with large batches of new OEM EV14 injectors and match them into sets flowing within +/-1% at both idle and wide open flow. Careful matching is essential at this size — small variances in idle flow hurt drivability on a 4-cylinder. We then package the matched set with carefully designed components to make them plug and play in NA and NB Miatas.
Good for around 300-350hp on a turbocharged build. The FF640 is the right pick for most Miata projects.
New: Add a DW200 fuel pump for only $80 (regular $99), shipping included! The DW200 is the best pump for most people. Uses stock wiring and requires no changes to your tune.
Plug and Play for 1990-2005 Mazda Miatas, requires standalone engine management.
