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Hey Everyone, Im new to Ls1tech but not new to cars. But I am new to turbos, just fyi. So I used to have a gen 4 5.3 mid 224/224 cam with ported heads and a Comp 7879 triple ball turbo, I was pushing 25 pounds with this spring in the waste gate. I spun a rod, bought a 4.8 and stuck that in my car with a tripple12 cam and stock heads. I didn't touch my wastegate or spring, But now the spring is acting like an 18 pound spring acording to my tuner? What do you guys think? weak spring? boost leak? Dyno sheet below. Thanks in advance!
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where did my boost go? 
