1999-2007 Chevy/GMC 4.8/5.3/6.0L Mac Performance Installation Instructions
1. Start by loosening the hose clamp from the stock air tube to the throttle body as shown.
2. Remove the clip from the located on the coolant hose to the stock air tube as shown.
3. Loosen the hose clamp on the stock air tube that is attached to the stock air box as shown.
4. Remove the stock air tube as shown.
5. Remove the clip from the MAF sensor and unplug the sensor as shown.
6. Remove the stock air box by pulling it straight up as shown.
7. Once the stock air box is removed, remove the plate that held it in place and set aside hardware for reuse with the MAC system.
8. Remove the MAF meter from the stock air box for reuse with the MAC air system.
9. Install the rubber o-ring supplied in the kit onto the MAF meter as shown.
10. Install the MAF meter to the velocity adaptor through the MAC air dam as shown and tighten using the hardware provided.
11. Install the MAC air dam in the stock location using the stock hardware as shown.
12. Install the 35° elbow to the MAF sensor as shown and install the 80° elbow to the throttle body.
13. Install the MAC air tube and attach the clip for the coolant hose as shown. Note: Do not over tighten the hose clamps.
14. Install the MAC air filter to the velocity adaptor and tighten. Note: Do not over tighten the hose clamp on the MAC filter.
15. Reconnect the MAF sensor and reinstall the clip as shown. Check to make sure that everything is tight. Next Install the MAC cover to the air chamber using the 2 fitting provided in the kit.
You are Finished.
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