Everything Auto: Install a Throttle Body Spacer

Better Blend: Give your horsepower a boost with a throttle body spacer.

When I read Airaid’s claim that installing the company’s Poweraid throttle body spacer would improve both power and fuel economy, I was a bit skeptical. After all, the descriptions sounded a bit like a frozen margarita recipe, with all of the swirling and the cool, fresh mixture getting sucked through a larger opening.

However, we installed it, we dyno tested it, and sure enough the throttle body spacer alone pulled seven extra horses. When combined with a complete Airaid intake system, we’ve seen up to 25-horsepower gains.

Fuel economy is a little different story. Our Airaid-equipped trucks have seen only slight improvements in fuel economy. Our conclusion: The Airaid intake and Poweraid throttle body spacer combination is a simple way to boost power without costing more at the pump.

Here’s how it’s installed on a 5.3L 2006 Chevy Z71 Crew Cab:

BetterBlendTT1 Everything Auto: Install a Throttle Body Spacer

Step 1: Disconnect the ground cable from the negative post of the battery. Then loosen a bolt and remove the beauty cover.

 

BetterBlendTT2 Everything Auto: Install a Throttle Body Spacer

Step 2: Loosen the hose clamps on each end of the air-intake tube and remove the tube.

BetterBlendTT3 Everything Auto: Install a Throttle Body Spacer

Step 3: Leaving the electrical components connected, remove the mass air-flow sensor and set it aside.

 

BetterBlendTT4 Everything Auto: Install a Throttle Body Spacer

Step 4: Rock the factory air box back and forth to loosen it from the grommets (there are no bolts) and remove it from the truck.

BetterBlendTT5a Everything Auto: Install a Throttle Body Spacer

BetterBlendTT5b Everything Auto: Install a Throttle Body Spacer

Step 5: Back off the five bolts, which hold the air box mounting plate and remove the plate.

 

BetterBlendTT6 Everything Auto: Install a Throttle Body Spacer

Step 6: Assemble the Cool Air Dam (CAD) panels using the supplied bolts washers and nuts.

 

BetterBlendTT7 Everything Auto: Install a Throttle Body Spacer

Step 7: Use a 10-millimeter socket to remove the three nuts on the throttle body.

 

BetterBlendTT8 Everything Auto: Install a Throttle Body Spacer

Step 8: Remove the throttle body from the intake manifold.

 

BetterBlendTT9 Everything Auto: Install a Throttle Body Spacer

Step 9: Remove the throttle body studs for the intake manifold.

 

BetterBlendTT10 Everything Auto: Install a Throttle Body Spacer

Step 10: With the fiber gasket in place, position the throttle body spacer between the intake manifold and the throttle body. Ensure that the flat side of the spacer faces the throttle body.

 

BetterBlendTT11 Everything Auto: Install a Throttle Body Spacer

Step 11: Install the top bolt through the throttle body and spacer and into the intake manifold—but leave it loose.

 

BetterBlendTT12 Everything Auto: Install a Throttle Body Spacer

Step 12: Carefully align all of the components so the bottom bolt holes line up.

 

BetterBlendTT13a Everything Auto: Install a Throttle Body Spacer

BetterBlendTT13c Everything Auto: Install a Throttle Body Spacer

Step 13: Install the bottom two bolts and tighten all three bolts without over-tightening.

 

BetterBlendTT14 Everything Auto: Install a Throttle Body Spacer

Step 14: Install the filter adapter into the CAD using three button-head bolts.

 

BetterBlendTT15 Everything Auto: Install a Throttle Body Spacer

Step 15: Re-install the Mass Air Flow sensor onto the filter adapter.

 

BetterBlendTT16 Everything Auto: Install a Throttle Body Spacer

Step 16: Install the hump hose on the Mass Air Flow sensor using the supplied hose clamps.

 

BetterBlendTT18 Everything Auto: Install a Throttle Body Spacer

Step 17: Install the coupler on the throttle body. 

Step 18: Install the Modular Intake Tube into the hump hose first and then into the throttle body coupler.

 

BetterBlendTT19 Everything Auto: Install a Throttle Body Spacer

Step 19: Install the Airaid filter on the filter adapter inside the CAD.

 

BetterBlendTT20 Everything Auto: Install a Throttle Body Spacer

Step 20: Install the weather strip along the top of the CAD.

 

BetterBlendTT21 Everything Auto: Install a Throttle Body Spacer

Step 21: Make sure all clamps, hoses and bolts are tight. Re-install the beauty cover.
Editor’s Note: Photography for this article provided by Bruce W. Smith. For more information on the products used, contact Airaid Filter Co., www.airaid.com, 1-800-498-6951.