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Aftermarket fuel injectors

IJSBA · Fuel

Aftermarket fuel injectors

Injectors that increase fuel flow are treated differently from injectors that increase AIRFLOW.

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.

Not permitted, not listed in the rules Our reading, not a rule we can quote at you. This class requires the craft to stay stock except where the rules allow otherwise, and this part is not on the list.

OEM part required 1 class

Replacing fuel injectors is prohibited. · SSK.4.3

Not permitted, not listed in the rules 1 class

Not listed in this class document. Illegal under the closed-list principle.

Legal, within limits 1 class

Original injectors may be modified to increase fuel flow; aftermarket injectors that increase FUEL flow only. Injectors that increase AIRFLOW are prohibited. · SKSS.5.1

Legal, within limits 1 class

Permitted subject to the universal limits in ijsba-globals.yaml constants.

Legal, within limits 1 class

Same fuel-flow-only constraint. · SKGP.8.1

Legal, within limits 1 class

SPGP.6.1

Legal, within limits 1 class

Aftermarket injectors giving increased fuel flow but no airflow increase; additional injectors allowed.

Aftermarket fuel injectors: 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.

Fuel · four stroke · legal outright in 7 of 14

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