You dont need a remote starter for a compression test. The tester's needle will stay put at whatever the comression is after cranking. All i do is set the tester on top the valve cover, with the dial face pointing at the inside of the car, so i can see it from inside, between the hood and the car. Then i crank over the motor until the tester's needle doesnt move up anymore. Then get out and see what your comression is. Never a need to have 2 people to do this.