fupsrl

FAQ

1 min read Updated 16 June 2026

Common questions about FUP hardware.

Can I run sequential injection on a wasted‑spark engine?

Yes — configure ignition as wasted‑spark and injection as sequential independently.

Does the M1 support flex fuel?

Yes, with a flex sensor on a digital input. See the M1 specifications.

Is the tune stored on the ECU or the laptop?

On the ECU. The laptop is only needed for tuning and logging.