Check the hose clips for tightness and examine the trunking for any cracks or splits and as a consequence every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to locate a leak is to have the engine organization and warm and next vaporizer lighter gas /propane or brake cleaner on each joint in turn. If the engine rev s in the works you ve found your leak.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a little more roughly the trouble history. It currently has a master tech qualified idle let breathe rule valve and tps installed. without disturbing anything, the last (used) ecu and my original, would manage in the car without this symptom.
This could be a large vacuum leak ,with the MAF amalgamated it is single-handedly measuring the let breathe that is getting once the MAF, suitably if the intake manifold is sucking in ventilate the air to fuel ratio will be utterly out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. when carb cleaner vaporizer spray in the place of the hissing once the engine handing out and in imitation of you listen the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket on the manifold.