How much boost pressure can a built VQ37VHR withstand?

TopgunZ · 11-04-2014, 09:44 AM

Quote:

Originally Posted by jwick

Back up the truck! I clearly remember having a Sunday morning conversation with you about this issue and how you should have plumbed the WGs. It was post-tune so maybe your comment is prior to tuning and then maybe you did get some bad advice.

You told me that your MBC failed and you just removed it and plumbed the two lines together. That action basically welded your WGs shut because you were adding equal pressure holding them closed as you were adding to open them.

Jwick,

When I spoke to you, you had advised me to hook it up the same way everyone else had. Even my tuner during the dyno and the 4 guys that worked at the shop said that the way it was, was correct. So we had all assumed that the MBC was bad. I eventually figured out you leave both top ends open, T into the bottom and into the MBC. I proved this out on the street when I was able to adjust it around 2 psi over spring pressure.

By removing the MBC I was then just running off of WG spring pressure.

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