Homemade LS430 True Cold Air Intake

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LS430 CAI

If MacGyver made a custom cold air intake for his Lexus LS430, it might look like this.

The 2005 Lexus LS430 is a solid performance sedan thanks to the 4.3-liter V8 with 290 horsepower and 320 lb-ft of torque. Unfortunately, there isn’t a huge amount of aftermarket support for this sleek sedan, leading one of our members to undertake the task of engineering a true cold air induction system for his 2005 Lexus using fairly common household items.

The Introduction

This homemade true cold air intake build thread from the Club Lexus forums was originally started by “05ls430518”, who owns a 2005 Lexus LS430. He explained that he wanted to create an air duct to the filter area along with a metal box that would isolate the air filter from the heat of the engine bay. He planned to do this by using HVAC supplies, heat insulation tape and some American ingenuity.

LS430 Injen Intake

In addition to explaining his plan, he included an engine bay shot of his Lexus with an Injen cold air intake that actually just draws warm air from the engine bay.

Insulating the Intake Pipe

This project began with the OP removing his Injen air intake setup, wrapping it in reflective heat tape. The idea here is that insulating the pipe will shield it from the heat of the engine bay, thus hopefully keeping some of that heat out of the intake air.

Wrapping the LS430 Intake

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