Above 30 mph the heat shield doesn't make a difference, there is enough airflow moving to push under hood temps down. There isn't enough heat sink from the tubing to worry about the aluminum tube heating up and warming the incoming air. I have 4" aluminumized exhaust tubing with silicone elbows and a giant K&N cone filter for my home made CAI. I ran a sealed airbox with heat shield and open and couldn't tell a difference.
- 5.3 Stock Internals - Cal Speed Stainless LT's - 18" Magnaflow - K&N Drop In - Airaid Intake Tube - Nelson Tune -
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- Cam - 3200 Circle D Stall - 10" King Coilover Shocks - 16" King Reservoir Shocks - FG front Fenders - 17" Methods -