hi guys. so i got a s15 a month back, car started fine and drove as well. i didn’t touch the car because i had to save up for wheels and a battery. replaced the wheels maybe a week ago with a buddy of mine. when the car first started up after placing the new battery in it my friend (without my permission) start revving my car on a cold start. i told him to stop and he took the keys out of the car and then when i try to start the car now it won’t turn over. there’s electricity in the car but the oil pressure gauge starts beeping at me. any suggestions on how i should go about troubleshooting? this is my first manual and i wanna see if i can fix it myself before going to a shop. thanks in advanced.