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Evan you were right found TWO air leaks on intake side now runs smooth with no cells BUT no Boost or Vac. Could it be N75 as when you found that broken wire with Intermittant current maybe damaged valve ? Any way the yellow wire on the N75 has constant power to it even with ing off ? mine does? Oh the mysteries ontrying to think oneday I'll get it right!!

N9909E

ECU goes limp when communication w/N75 is lost.

Scenic Driver

I dont think a bad valve would cause the low vacuum

TTschwing

N75 has nothing to do with Vac readings..

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from n75 to wastegate once engine cools down

TTschwing

Your Gauge is either bad or your hose to the "T" fitting is crimped or busted. The engine will ALWAYS have vacuum at the manifold at idle. If the hose from the N75 to the wastegate is bad you'll have an overboost situation and I don't think that's your issue..

The N75 has absolutely NOTHING to do with normal idle or any running for that matter when not on boost

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for boost Runs as a N/A car turbo is doing nothing Block 115 said call for boost is trere but not making any. Guess when I did work must have pulle something loose and now I CAN NOT FIND IT

TTschwing

I assume you're hooked to the FPR line?....That hose goes directly to a nipple under the manifold. And that braided line is known to deteriorate. This means your fueling is not being ramped up when boost is called for which is a whole nother problem. You've STILL got something off or disconnected..

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pressure test again---- thought after 3x I had it guess not