How To Install A Custom Kernel With TWRP Recovery

A custom kernel can open up a new level of control over your device, such as overclocking/underclocking, undervolting, changing governors, changing I/O schedulers, adjusting colour calibrations, adjusting sound calibrations, and many other options.

-Download a kernel that is compatible with your current ROM.
-Check the md5 to verify its integrity.

-Enter TWRP recovery.

-Select the install option from the TWRP home screen.

-Navigate to the kernel and select it.

-Swipe to install.

-You'll have an option to wipe cache/dalvik and an option to reboot system. Wipe the cache/dalvik, hit the back button, and hit the reboot system button.

Once your phone has booted up you can use a kernel tuning app to change governors, I/O scheduler, clock speed, and other options. Some of the popular kernel apps are Kernel Auditor, Trickster Mod, No Frills, Kernel Tuner, and many more.