Review on AEM X-Series Boost Pressure Gauge 52mm (Model 30-0306) by Gerald Hill

Pressure gauge shows vacuum and boost pressure. There is no connection between what is read and what is real. For example, the vacuum isn't always 1/2 out, so there's not even a reference point. In my car the boost at 0.50psi is off at 27psi, but at 28psi the boost is 3 full psi. Return to AEM. I will also add that this is the second sensor/sensor I have received. The first was broken. Oh yes, the pressure gauge is connected to electricity when cranking. Woadate - I will not buy this gauge again. Em analyzed it and said it met spec but read as above. Garbage.