Boost elbow?

[scippy]

Received my Edge ez today came with a brass elbow?......how important is it to install when hooking up the ez tuner?.......... what does it actuially do?

 

[MADDOG]

Small brass elbow?

 

[jlbayes]

Restricts flow to the waste gate actuator for more boost. I prefer adjustable elbows. Available off ebay for under $15 shipped.