Quote:
Originally Posted by Gosuu
Requires only ~8in/Hg of manifold vacuum to open exhaust valve
Vacuum actuated, requires post-throttle body intake manifold vacuum source for activation
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IIRC the highest vacuum i have ever seen pulled on the MAP is -0.7psi, whereas your cutout requires ~4 psi, and that's only at low/no throttle (i.e., idle or decel). If you want the cutout to open under WOT/boost, you are never going to get it to work by connecting post TB which you necessarily have positive pressure and not vacuum at the MAP under those conditions. A vacuum-actuated cutout is just not correct for this application with where you are trying to tap into