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How much boost pressure can a built VQ37VHR withstand?

Originally Posted by jwick What spring did you install? And I second your statements of a single. Mine comes on hard and fast. I'd be shocked if an equivalent TT

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Old 11-06-2014, 09:49 AM   #1 (permalink)
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Originally Posted by jwick View Post
What spring did you install?

And I second your statements of a single. Mine comes on hard and fast. I'd be shocked if an equivalent TT spools more than a couple hundred rpms faster.
I installed the 10.5lb springs. I think they were black. They do have a +/- tolerance range of 1.5lbs though.

Another good reason to never run spring pressure alone. I was seeing 11lbs of boost on the initial run and it slowly tapered off when things started heating up. Pretty soon I was down to 9lbs and falling off hard up top.
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