97710 Boost Tube System for 2017 thru 2019 L5P
INSTALL INSTRUCTIONS
Part #s
25999
Banks High-Flow Boost Tubes 2017-2019 Chevy/GMC 2500/3500 6.6L Duramax, L5P
Please read through the following instructions thoroughly before starting your installation. If you have any questions please visit our Support Page.
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ATTENTION: Boost-Tube Clamps
When Installing the clamps, be sure the hose and clamps go on far enough to clear the bead on each end.
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An improper installation, such as a clamp sitting directly on a bead or crossed diagonally, will result in a boost leak.
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Required Tools
Socket Driver
Socket Extension
8mm Socket
10mm Socket
10mm Deep Socket
11mm Deep Socket
13mm Deep Socket
10mm Wrench
14mm Wrench
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Bill of Materials
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General Installation Practices
Removal of the Stock Tubes
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1. Begin by putting the truck on a flat surface and remove the fender well.
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2. Disconnect the mass air sensor, by sliding the red locking mechanism back until you hear a click.
Then, use your thumb to depress the tab and push the connector back off the housing.
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3. Remove the factory intake using an 8mm socket to loosen the clamp on the factory duct.
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4. Remove the two bolts on the cover assembly using an 8mm socket.
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5. Lift the assembly out to expose the air filter.
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6. Remove the factory air filter by pulling upward until you hear the retaining clips pop.
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7. Disconnect the inlet throttle temperature sensor.
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8. Remove the 10mm bolt holding the upper boost tube in place.
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9. Remove the lower end of the factory tube by unclipping the retaining clip with a flathead screwdriver.
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10. Remove the factory tube from the engine compartment.
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11. Using a 10mm wrench remove one bolt from the fan shroud to allow for flexibility.
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12. Disconnect the other factory tube by using an 11mm deep socket on the upper clamp.
NOTE: The lower clamp is behind the support mount and is difficult to reach.
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13. Locate the lower clamp and carefully feel for the correct tool placement. Use a socket extension.
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14. Once the clamps have been loosened, gently pull the tube from the intercooler.
Installing Banks Boost Tubes
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1. Prepare for the installation by removing the sensor from the factory tube and install it on the Banks tube.
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2. Remove the retaining clip from the factory tube charge air cooler end and install it on the Banks boost tube adapter.
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3. Pre-install the rubber boots and loosely tighten the hose clamps in place.
Please note the orientation of the tubes shown in the photo is the correct orientation for installation.
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4. Install the cold tube through the top of the engine.
NOTE: Take care not to accidentally rotate any of the clamps you pre-installed.
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5. Slide the upper portion of the tube over the throttle body.
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6. Slide the lower portion and push until you hear the retaining clip pop into place.
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7. Fasten the clamps on the top portion of the tube with an 11mm deep socket.
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8. Reconnect the throttle valve inlet temp sensor.
Installing the Hot Tubes
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1. Install the boot with a clamp onto the intercooler flange.
NOTE: It’s important to orient the lower clamp with the drive nut in the vertical position because tool access is limited.
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2. Use an 11mm deep socket with an extension to secure the clamp.
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3. Install the lower tube by feeding it through the wheel well and up into the engine bay.
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4. Loosely install the second clamp onto the lower boot and gently slide the lower portion of the tube into the boot.
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5. Prepare the upper section of the tube by installing the boots and clamps.
Be sure to leave the clamps slightly loose to allow for flexibility.
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6. Place the upper tube into position, and slide the upper portion of the tube onto the turbo flange.
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7. Join the two tubes together using the mid-boot and a clamp.
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8. Double check the fit of the tube by pulling on it and making sure all clamps are in place.
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9. With everything in place, lockdown the upper tube by tightening the clamp.
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10. Secure the mid-boot by tightening the clamps.
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11. Tighten the clamps on the bottom tube.
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12. Reinstall the fender covers on both sides of your truck.
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13. Reinsert the airbox and filter. Simply press the airbox down until you hear it snap into place.
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14. Place the intake back into position by reconnecting the duct.
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15. Lock the airbox down by reinstalling the bolts.
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16. Reinstall the MAP sensor by pushing together until you hear the click.
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17. Secure the intake duct back into place by tightening the clamp.
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18. Congrats! You have successfully installed your Banks boost tube kit!