y dose my car not go over 4500
rpm the coil pack is fine and spark plugs are ok. on 1993 Subaru Impreza

Coil pack and spark plugs would it be down to the 3 port boost solnoid

Asked by for the 1993 Subaru Impreza
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is your ck eng light on? if so scan codes and post so we can adv
No the engine light not no