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Boost spike problem

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ferruchnuts44

15+ Year Contributor
112
14
Jun 28, 2004
Ellwood City, Pennsylvania
I just finished most of my new setup: sbr manifold w/ tial 38mm (1bar spring) external gate, ported evoIII 16g turbo and just picked up a hallman pro mbc off my friend whos had no problems whatsoever using it on his srt4. What I can't figure out is when I initially go wot it will boost to 20+ before I let off then usually after that I can go WOT at anytime and it will hold the right boost. Its just that first or second time after I start the car and run it. I'm completely flustered over this, I can run solid 15psi off the wastegate but I'm tryin to go around 17-18psi. I have the boost controller vac lines hooked to the side of the tial and a boost souce nipple on my jpipe. Any ideas??
 
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