If you are looking to increase your engines efficiency, all while making it look gorgeous, then our Toyota Landcruiser 70 Series stainless steel intake pipe is an upgrade you'll want under your bonnet. Important Note: If you are purchasing an Intake Kit for a GSL Airbox (Toyota LandCruiser 70 Series), please select the "Without MAF Port Intake Kit" option. A retune is not required with this setup. If you are purchasing this Intake Kit for use with a competitor Airbox, please select the "With MAF Port Intake Kit" option. A retune will be required with this configuration. Better Engine Efficiency: Our system rocks a 4'' main section, which brings a good number of benefits for performance and longevity. Performance wise, it can increase the amount of air the engine can take in, therefore improving combustion efficiency. This can be felt right after installation, but with a remap, you'll notice a considerable performance increase. Being that combustion efficiency is one of the most crucial elements to a remap, the ability to access more air/oxygen makes it much easier for the car to perform well. Importance of the MAF sensor: More often than not, a [4''] custom intake will have a hole made for the MAF sensor close to the original location, but - unless it's a 3.5'' intake - you'll probably end up with a dead pedal until 2k RPM... That's why we relocate our MAF sensor to the airbox; attaching to the 3.5'' exit of the OEM airbox. If you want to get the maximum performance out of the upgrade, consider purchasing one of our GSL 4'' Airboxes. This will allow us to scale the remap up to 4'' and will utilise the full amount of air the 4'' pipe can hold.