2.5" Boost Leak Tester End Cap - 6061 Billet Aluminum - 30 PSI Gauge - Anti-Slip, Schrader Valve

Boost Leak test your turbo motor with this universal 2.5" rugged end cap. Has a fitting and boost gauge to make it easy and convenient to test with a compressor while the car is off.

You can easily slip it right into a flexible hose or use it in conjunction with any rubber or silicone adapter and bolt to any hard pipe or the turbo inlet flange.

A boost leak test is a very quick and easy test and eliminating leaks in your turbo motor will restore HP, improve fuel economy and avoid costly turbo or engine repair! 

This Billet Aluminum End cap will fit inside your silicone or rubber intake hose. Purchase 2 if testing on a twin-turbo or doing a charge air intercooler test where you want to block the other side.   You will be able to pressurize the entire intake system by using an air compressor w/ a universal tire inflation chuck tool on your air line.

The main signs you have a leak are:

• Lower fuel economy. Loss of power, torque, and slow spool up
• Check engine lights
• Whooshing and whistling noise when on boost
• Running rich / smell of fuel
• Fluctuations on boost gauge

 Includes/Design Features: 

• 2.5" O.D. (outer diameter) End Cap - Billet 6061 Anodized Aluminum, 1/8" NPT threaded gauge port & fitting port 
• Anti-slip bead on the lip and grip slots cut onto the mating surface
• Machined grip rings on the clamped surface and 1/4" NPT threaded port for a compressor air fitting
• Boost Gauge - Custom Stainless Steel 30 PSI / 2 Bar – Liquid filled Shock Proof
• Tire Valve Fitting: Universal Tire Schrader Valve (can be tapped for 1/4" NPT thread fitting if desired) 
• 2.5" Stainless Steel T-bolt Clamp
• Lifetime warranty 

Importance of a Gauge? 

Absolutely necessary for a proper test! Not having a gauge readout on a boost leak test is similar to filling air in your car's tire without a gauge. You just don't know how much air is in there! 
It’s wise to know how much pressure is actually going into the charge system to prevent damage to the engine and to yourself. For example, if the compressor is unregulated (ex. shop air at 90 PSI) there is a risk that you can over-pressurize and something will give. 

Benefits of Gauge: 

1. Allows you to apply a safe amount of pressure to prevent injury or damage 
2. read how fast the system holds and bleeds air 
3. Gives a good comparison of compressor outlet air Vs. boost test air while pressurizing. (lower the difference the better) 

What happens to the turbocharger if there is a boost leak?? 

Any leak will cause the turbo’s wheels to over-spin and result in the bearings to wear out eventually causing shaft play! This happens faster with larger leaks. This condition then allows for the turbo’s wheel tips to make physical contact with the turbo housing. It’s over for your turbo at that point! 

Simple Steps to Use the Boost Leak Tester: 

1. Remove the intake hose/pipe off your turbocharger's inlet 
2. Install the boost leak tester onto the turbocharger's inlet or use your own adapter silicone reducer and secure with the T-bolt clamps.
3. Pressurize the boost leak tester with an air compressor and a tire inflation tool. The air compressor should be a minimum of 2 gallon volume. The larger the compressor, the more capacity you have to fill the engine’s charge pipes. A bike pump or electric pump will not supply enough air fast enough to fill the system 
4. *Caution!- When filling the system, start with a low pressure around 5 PSI. Recommended to regulate the compressor to a lower pressure and only increase if filling is too slow. · The boost gauge reading indicates how much compressed air is in the charge pipes. · The boost gauge allows you to read the bleed rate of charge pipes when you remove the pressure. It is normal to see pressure loss average of 1psi every second. Faster bleed rate at higher pressures and slower bleed rate at lower pressures 
5. Listen for leaks. Use soapy spray if necessary to identify smaller leaks. 
6. Fix any leak points and then retest. Increase by 5 psi up to the normal operating boost pressure. 
7. Go out and Boost! Enjoy the restored power from your engine!

Turbo Boost Leak Testers, Inc. has been producing boost leak testers for all makes and models for over 15 years. High quality premium components and direct customer service via phone, text, video.

Not sure what size you need? See our What Size Do I Need? size chart, or text a photo of your turbo inlet with a tape measure across it to 248-403-8512 and we'll tell you the size.