Wes Duenkel
February 9, 2018

When it comes to cold air intake systems for the 2011-2014 Mustang GT, enthusiasts are spoiled with choices. So when Holley Performance Products set about designing a cold-air intake system for the popular application, they knew it had to be good.

As with all of Holley’s iNTECH line of cold-air intake systems, the Holley engineers started from a clean sheet to remove as many constraints to maximize performance. The result is an innovative solution that not only adds power, but is easy to install.

The intake system is centered around a large, four-layer washable and reusable conical air filter that’s oriented downwards to maximize its surface area and flow through the filter. The filter seals to the air filter housing and intake tube with a nifty, patent-pending Slip-Seal interface that eliminates the need for any clamps.

The filter housing seals tightly to the Mustang’s OEM cold air scoop to ensure the large Holley filter doesn’t suck any power-robbing hot air from the engine compartment. Holley includes a high-quality silicone bellows coupler that connects the one-piece intake tube to the throttle body while allowing room for engine movement and a nitrous plate.

We traveled to Holley’s Bowling Green, Kentucky facility to watch engineer Ethan Townsend install Holley’s iNTECH Cold Air Intake on a 2013 Mustang GT. Not only did the installation take less than an hour, but the system added over 17hp and 16 lb-ft of torque to the rear wheels on Holley’s in-house chassis dynamometer.

1. Holley’s iNTECH Cold Air Intake for 2011-2014 Mustang GT features a large, 4-layer, dry, washable and reusable air filter, and all necessary components for a professional installation.

2. First, we removed the strut tower brace.

3. Then, we removed the engine cover.

4. Next, we used pliers to loosen the spring clamp and disconnect the sound tube.

5. Next, we disconnected the sound tube mount from the air box.

6. After pushing on the release tab, we disconnected the PCV tube from the OEM intake tube.

7. Then, we disconnected the mass airflow sensor’s harness.

8. After loosening the clamps, we disconnected the OEM air intake tube from the air box and throttle body.

9. Next, we removed the OEM air box and disconnected its attached harness.

10. With the OEM parts removed, we transferred the mounting grommet from the OEM air box to the Holley iNTECH air filter housing.

11. When comparing the Holley iNTECH conical air filter (left) to the OEM panel filter (right), it’s clear why the iNTECH filter offers more surface area and flow.

12. We transferred the OEM mass airflow sensor to the iNTECH intake tube using the supplied screws.

13. Then, we connected the iNTECH air filter housing to the OEM cold air scoop and pressed the iNTECH housing into the OEM rubber mounting grommets.

14. Next, we slid a clamp and the silicone coupler over the throttle body.

15. We used a nut driver to tighten the clamp.

16. Then, we installed the supplied PCV fitting into the intake tube.

17. The unique Slip-Seal joint creates a sturdy, leak-free connection between the air filter, air box, and intake tube without needing any hose clamps.

18. We used the supplied hose clamp to complete the throttle-body connection.

19. With everything in place, we used the OEM air box bolt to anchor the Holley iNTECH air filter housing to the chassis.

20. Then, we reconnected the sound tube to the Holley intake tube.

21. Then we reconnected the mass airflow sensor harness.

22. Finally, we relocated the sound tube’s mount from the strut tower to the air filter housing.

23. The Holley iNTECH Cold Air Intake blends in well with the surrounding engine compartment components.

24. The Holley iNTECH Cold Air Intake system added over 17hp and 16 lb-ft of torque to the rear wheels. Not bad for less than an hour’s worth of work!