7.3 Cowboy
New member
- Joined
- Feb 13, 2013
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My truck has a 38r Garrett on it only making 19 psi of boost. I put new ceramic bellowed up pipes on it a couple weeks ago because before that it would only make 9psi. I double checked all the bolts and clamps they are all tight. I checked all the boots when I did the up pipes none were tore. Could this be wastegate? How can I pressure test for boost leaks?