Understand Ion Burn
Useful when…
- Increase Railjack boost speed during piloting.
- Use as a Plexus mod when boost speed is more useful than another ship improvement.
What the bonus covers
Ion Burn adds +7.5% Railjack Boost Speed at rank 0, +30% at rank 3, and +45% at rank 5. It is a Common Plexus mod with Vazarin polarity, maximum rank 5, and base drain 4.
Distinguish other speed effects
Conic Nozzle lists a Railjack Speed bonus, while Cruising Speed lists a Railjack Speed bonus only when no enemies are within 3,000 metres. Ordnance Velocity affects ordnance projectile speed. These descriptions cover different conditions or targets; they are not the same boost-speed effect as Ion Burn.
Rank investment
Listed fusion costs are 10 Endo and 483 Credits from rank 0 to 1, 40 Endo and 1,932 Credits from rank 2 to 3, and 160 Endo and 7,728 Credits from rank 4 to 5. The listed drop sources include several Railjack enemy types; listed chances differ by enemy and do not guarantee a drop. Prioritize ranks if the full boost-speed bonus matters to your piloting.
Limitations and tradeoffs
- Uses Plexus capacity and a mod slot for boost speed.
- Its stated bonus is specifically boost speed, not general Railjack speed or ordnance speed.
Common mistakes to avoid
- Reading the boost-speed bonus as a bonus to all Railjack speed.
- Confusing ship speed with ordnance projectile speed.






