How to install a turbo kit on a b18

Written by alexander eliot
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Honda's B18 engines are often used for engine swaps into lightweight hatches. The various B18 engines were commonly found in the Acura/Honda Integra vehicles such as from the USDM Acura Integra LS (140-horsepower B18B1) and JDM Honda Integra Type R (197-horsepower B18 Spec R). No matter which B18 engine your Honda or Acura is equipped with, installing a turbo kit will increase its horsepower.

Skill level:

Things you need

  • Full turbocharger kit
  • Socket wrench
  • Socket set
  • Screwdriver set
  • Angle grinder
  • Engine oil
  • Radiator fluid
  • Exhaust gasket
  • Black marker
  • Engine tuning software

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  1. 1

    Drain the engine oil and radiator fluid prior to installation. Remove the front bumper and bumper liners by unscrewing and unfastening all bolts, screws, and plastic fasteners.

  2. 2

    Remove the stock intake by loosening the throttle body clamp ring and removing all mounting bolts. Detach the exhaust header by removing the bolts securing it to the cylinder head and catalytic converter.

  3. 3

    Bolt the turbo kit's exhaust header to the cylinder head with the stock bolts. Connect the exhaust downpipe to the manifold with the supplied bolts. Bolt the downpipe's other end to the catalytic converter using the stock bolts. Be sure to install a new exhaust gasket to avoid leaks.

  4. 4

    Bolt the turbocharger to its designated flange on the exhaust header using the supplied bolts. Connect the turbo kit's intake and/or air filter to the turbocharger's inlet with the supplied clamp ring.

  5. 5

    Bolt the turbo kit's intercooler into place in front of the engine radiator. Install the intercooler J-pipe between the turbocharger's compression wheel and intercooler inlet. Secure in place with supplied rubber connectors and clamp rings.

  6. 6

    Connect the intercooler up-pipe to the intercooler's outlet. Connect the other end to the B18's throttle body. Tightly secure all intercooler clamp rings to avoid boost leaks.

  7. 7

    Install the turbo kit's blow-off valve onto the intercooler up-pipe's blow-off valve flange. Install all the necessary vacuum lines, oil/coolant lines and sensors to the turbocharger and intercooler system. Refer to the turbo kit's vacuum diagram for specific line and sensor locations.

  8. 8

    Trim the vehicle's front bumper and/or bumper liners so they can be reinstalled overtop of the intercooler system. Mock-fit the bumper and bumper liners into place, and mark where they make contact with intercooler components. Cut these locations out with an angle grinder. Reinstall the bumper and liners by reversing the removal steps.

  9. 9

    Tune the B18 via a piggyback ECU tuner or a standalone ECU system. The increased airflow of the turbo system requires the B18's stock engine programming to be modified. A professional dyno tune is ideal, as power gains and engine reliability are entirely dependent on engine tuning.

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