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General Auto Repair case study

Toyota Alphard AGH40 2.5 — Twin-Screw Supercharger Installation

A twin-screw supercharger, water-cooled charge system and tailored ECU remap were installed on an Alphard AGH40 2.5, with leak checks and road testing.

Documented by Sri Kuching Car Audio & Air Cond Service Centre · Taman Mastiara, Kuala Lumpur

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Toyota Alphard AGH40 2.5 — Twin-Screw Supercharger Installation — workshop photograph

Vehicle and workshop

Vehicle make and model
Toyota Alphard AGH40 2.5
Service category
General Auto Repair
Workshop
Sri Kuching Car Audio & Air Cond Service Centre, Taman Mastiara, Kuala Lumpur

Customer concern or upgrade request

The owner requested stronger acceleration while retaining daily drivability and a low-maintenance setup.

Repair and upgrade work

The owner requested a performance upgrade for the AGH40 2.5 — seeking stronger acceleration while keeping daily drivability and low maintenance. We installed a twin-screw supercharger package with an integrated water-cooled charge system and completed a tailored ECU remap to match the new hardware, ensuring safe boost delivery and reliable operation.

  • Twin-screw supercharger hardware installation
  • Water-cooled charge system setup and leak verification
  • ECU remap for boost, fuel, and drivability calibration
  • Post-install diagnostics, road test, and performance validation

Components used in this case

  • Twin-screw supercharger package
  • Integrated water-cooled charge system
  • ECU remap matched to the installed hardware

Testing and verification

The work included charge-system leak verification, post-install diagnostics, a road test and performance validation. The recorded result describes stable ECU operation under load and temperatures within the workshop's targets.

Documented outcome

Noticeably stronger mid-range pull with smooth driveability for daily use. Water-cooled system operating within temperature targets, ECU remap stable under load, and a low-maintenance setup suited to Alphard family use.

5 workshop photos documenting this Toyota Alphard AGH40 2.5 case. Select a photo to enlarge it.

Toyota Alphard AGH40 2.5 — Twin-Screw Supercharger Installation — workshop photograph 1 of 5
Toyota Alphard AGH40 2.5 · Workshop photo 1 of 5
Toyota Alphard AGH40 2.5 — Twin-Screw Supercharger Installation — workshop photograph 2 of 5
Toyota Alphard AGH40 2.5 · Workshop photo 2 of 5
Toyota Alphard AGH40 2.5 — Twin-Screw Supercharger Installation — workshop photograph 3 of 5
Toyota Alphard AGH40 2.5 · Workshop photo 3 of 5
Toyota Alphard AGH40 2.5 — Twin-Screw Supercharger Installation — workshop photograph 4 of 5
Toyota Alphard AGH40 2.5 · Workshop photo 4 of 5
Toyota Alphard AGH40 2.5 — Twin-Screw Supercharger Installation — workshop photograph 5 of 5
Toyota Alphard AGH40 2.5 · Workshop photo 5 of 5

Questions about this Toyota Alphard AGH40 2.5 case

What was included in the Alphard AGH40 supercharger installation?

The package included twin-screw supercharger hardware, a water-cooled charge system and an ECU remap for boost, fuel and drivability calibration.

Does this case include a measured horsepower gain?

No dyno figures or measured horsepower gains are included in the workshop record. The documented outcome describes stronger mid-range acceleration and smooth daily drivability.

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