BMW N54 Boost Leak Tester for MMP Inlets (Relocated & Stock Location) - 135i 335i 535i Z4 1M

This twin turbo Boost Leak Tester kit mounts on the inlets of your MMP upgraded intake, both the relocated inlets and the stock location inlets.  Simply remove the air filters and mount both testers onto the aluminum pipes (2.5").  Both testers must be installed at the same time and this allows pressure to be built up in the system without venting through the second  turbo.  You'll be able to test for all leaks from the intake to the motor checking all leak points in between, including intercooler, clamped connections, diverter valves or BOV if installed, intake manifold seals, valve cover leaks and many other potential leak points.  

Note the N54 cylinder head has small ports in the intake ports that allows boost to enter into valve cover and crankcase.  So during normal boosting some pressure will be lost.   Supplied with this kit is a rubber cap to plug the crankcase vent port on the back of valve cover to prevent this boost from venting to atmosphere.  Plugging this is also necessary if running a catch can setup that is open to atmosphere.  

This kit also comes standard with a 30-PSI gauge, threaded tire valve stem fitting and (4) stainless steel T-bolt clamps.  

The top-mounted threaded boost gauge allows the user to easily read the pressure in the system to prevent over pressurizing.

Kit contains:

• 2 boost leak testers, one side for fill (30 PSI gauge, tire valve stem fitting), other side as a blank
• 4 stainless steel T-bolt clamps
• 1 rubber cap for valve cover crankcase vent port
• 2 rubber caps for diverter valves

Compatible with:

• MMP relocation aluminum inlets (2.5")  MMP product page
• MMP silicone relocation inlets (2.5") MMP product page
• MMP stock location inlets (2.5") MMP product page

Compatible with vehicles:

• N54 engine in any 135, 335, 535, z4, 1M

Lifetime warranty on every component. Designed and engineered in the USA.

Helpful guide: How to boost leak test a BMW