Boost leak testing is the cheapest way to get basically free power and ensure your running efficiently. The tester doesn't need to be complicated.
Here's mine. Just a PVC cap from homedepot, truck tire valve (screw in type that has a nut to hold it in place) from napa and an air pressure valve bought off amazon. You can probably get everything at one store. Drill your holes small enough that you can just screw in the valves, though the tire valve has the nut on the outside to hold it in place.
