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The ball and spring type MBCs are less prone to spikes than the bleed valve types. Turbotech ones are $30, so it's no big loss if it you find you want a EBC. MBCs are easier to set up too.
That T04E will be laggy as. You should start looking into the GTS-R HR31 RB20's, they ran one from factory. They have an insane exhaust manifold to boot too.
Really? I run one of the Turbotech ones with no probs.