Are engineering courses included in the sGPA? Also, do a significant number of B+ hinder your medical school application?
According to the AMCAS Course Classification guide (https://students-residents.aamc.org/applying-medical-school/article/course-classification-guide/) most if not all engineering do not count towards your science gpa. Your science gpa is composed of Biology, Chemistry, Physics, and Mathematics. GPA is not the only thing factored into a medical school application, but it is a very large facet of your application. A B+ is a 3.3 GPA and several of these in engineering courses could bring down your cumulative below the ideal 3.75+ range. However, if you do well in your pre-medical and other elective courses it will not significantly hinder your chances. Let us know if you have further questions.