The rules do not say 1 class
SKM has no electrical or ignition section (SKM.5 jumps to SKM.9).
- Ski Modified · SKM
IJSBA · Ignition
ECU reflash / reprogramming of the OEM unit
The stock-class-legal tuning route. Hardware stays, software changes.
Where it stands, class by class
14 classes, grouped by the answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.
The rules do not say 1 class
No ignition/ECU section was found in SKSS. Do not assert either way.
- Ski Superstock · SKSS
The rules do not say 1 class
The ECU is not mentioned anywhere in · ROP
Legal 6 classes
Explicitly permitted by this class document.
- Four Stroke Ski Lites · FSKL
- Runabout Limited · RAL
- Runabout Superstock · RSS
- Freestyle · FREST
- Ski Grand Prix · SKGP
- Sport GP · SPGP
Legal 1 class
FSSK.5
- Fixed Steering Ski Stock · FSSK
Legal 1 class
RRL.5.2
- Runabout Rec Lites · RRL
Legal 1 class
Reprogramming of the original ECU with no additional inputs or outputs and original connections retained. · SSK.5.2
Legal 1 class
RNA.7.2
Legal 1 class
RAS.7.2
- Runabout Stock · RAS
ECU reflash / reprogramming of the OEM unit: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.
Every IJSBA class · where the rulebooks differ · signed checks on parts the shop sells.
Ignition · four stroke · legal outright in 11 of 14