2006 Nissan Frontier Buildup - From Mild To Milder

A Volant 3-inch silicone connecting sleeve was inserted and secured to the throttle-body using a stainless steel clamp.

A long extension, swivel ratchet, and 13mm socket were used to secure the air filter box to the inner engine bay floor.

After removing the factory horn assembly. The Volant ram-air scoop was lowered into position and connected to the air filter box with a silicone 3-inch connector, then secured with two stainless steel clamps. The factory horn assembly was then reinstalled in the factory location.

After the Volant Pro-5 conical, pleated air filter was inserted onto the air intake tube, it was secured with a stainless steel clamp.

To improve the burnt exhaust gas flow, pulsation and backpressure, a Gibson Performance after-cat exhaust system will replace the more restricted system.

After running the truck on the Gibson dyno, Shawn began the install by unthreading the lead pipe's nuts and bolts and disconnecting the rubber hangers. Shawn then lowered the factory exhaust in one piece.

Shawn then installed the Gibson crossover exhaust tubes behind the factory catalytic convertors. This is where the big power gains come from because the factory crossover is poorly designed.

After double-checking all of the fittings, Shawn dropped his welding hood and began tack-welding all of the slip-joint fittings of the exhaust.

The new Gibson exhaust system increased the torque and horsepower from the Nissan's 4.0L V-6.

The dyno chart shows the before and after engine horsepower and torque results from the Nissan 4.0L V-6. Before horsepower was 222.54 and torque 214.73. After horsepower was 226.39 and torque 224.01.