(1) Subsection (1) (as amended by section 13 of the Act of 1986) of section 42 of the Principal Act is hereby amended by the substitution for the proviso thereto of the following proviso:
"Provided that an insured person shall not be entitled to injury benefit in respect of the first 3 such days.".
(2) Subsection (1) of section 48 of the Principal Act is hereby amended by the deletion of paragraph (b).
(3) This section shall apply to any claim for injury benefit which commences on or after the 8th day of April, 1991.