AEM 15psi Boost Gauge X Series MAP All kits come accompanied with All kits come accompanied with 15ft of the highest quality nylon DOT rated air line and an appropriate 1 8 NPT push lock fitting assortment that allows several different options of routing and connecting your boost controller The Exhaust Backpressure install kit is engineered to provide backpressure readings without sacrificing sensor longevity due to extreme operating conditions 200” cup depth – mount them virtually anywhere It is a must for users who want highly accurate boost or fuel pressure readouts up to 15 PSI in their high performance supercharged or carbureted vehicle