Thread: 2 different vac readings?

anyone?

Sorry to revive an old thread, but I just installed a boost gauge and put the t ini the exact same spot, and I am having the same trouble. I was running 11 psi of boost on a 3.5 gen v according to Torque app, I installed a boost guage and aeroforce and still ran torque app, all 3 gauges match the boost, -20 at idle, and at WOT cant get past 5 psi. Also, car is down on power now and you can feel it. Also, the sc sounds different like it much quiter??? hard to explain but it is not the same? Going to disconnect the boost gauge after work and see if it goes back to normal. Just weired. Was thinking maybe boost line is pinched somwhere??? IDK