This Boost Leak Tester is made to fit on the INSIDE of your Turbo's intake pipe (TIP) after the MAF sensor housing. Comes standard with a 30 psi gauge, tire valve stem fitting, 3/4" plug and some zip ties. The plug is used to plug the crankcase breather line that attaches to the TIP.

For stock or aftermarket TIPs that are 2.75" inner diameter.