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The Toyota Celica GT-Four is a legendary vehicle known for its performance and rally heritage. For enthusiasts looking to enhance their driving experience, upgrading the suspension and tuning the ECU are two of the most impactful modifications. This guide will walk you through the installation of TRD suspension and the Cobb tuning ECU.
Understanding Your Celica GT-Four
The Celica GT-Four is equipped with a turbocharged engine and all-wheel drive, making it a favorite among car enthusiasts. To maximize its potential, modifications like a performance suspension and an optimized ECU can make a significant difference.
Tools and Materials Needed
- Socket set
- Wrench set
- Torque wrench
- Jack and jack stands
- TRD suspension kit
- Cobb tuning ECU
- OBD-II scanner
Installing the TRD Suspension
Upgrading to TRD suspension will improve handling and ride quality. Follow these steps for installation:
Step 1: Prepare Your Vehicle
Ensure your vehicle is parked on a flat surface. Use the jack to lift the car and place it securely on jack stands. Remove the wheels to access the suspension components.
Step 2: Remove the Old Suspension
Using your socket set, remove the bolts securing the old struts and springs. Carefully detach the components from the vehicle. Make sure to keep track of all hardware for reinstallation.
Step 3: Install the TRD Suspension
Install the new TRD struts and springs in the reverse order of removal. Ensure all bolts are tightened to the manufacturer’s specifications using a torque wrench.
Step 4: Reassemble the Vehicle
Once the new suspension is installed, replace the wheels and lower the vehicle back to the ground. Double-check all bolts for tightness.
Tuning with the Cobb ECU
The Cobb tuning ECU allows you to optimize your vehicle’s performance. Follow these steps to install the ECU:
Step 1: Locate the OBD-II Port
The OBD-II port is usually located under the dashboard near the driver’s seat. Ensure the vehicle is turned off before proceeding.
Step 2: Connect the Cobb Tuning ECU
Plug the Cobb tuning ECU into the OBD-II port. Turn the vehicle’s ignition to the “on” position without starting the engine.
Step 3: Upload the Tune
Using the Cobb Accessport device, follow the on-screen instructions to upload the desired tune to your vehicle. This process may take a few minutes.
Step 4: Verify the Installation
Once the tune is uploaded, disconnect the Cobb ECU and start the vehicle. Use an OBD-II scanner to check for any error codes and ensure everything is functioning properly.
Testing Your Upgrades
After completing the installation of both the TRD suspension and Cobb tuning ECU, take your Celica GT-Four for a test drive. Pay attention to the handling and performance changes.
Conclusion
Upgrading your Toyota Celica GT-Four with TRD suspension and a Cobb tuning ECU can significantly enhance your driving experience. By following this guide, you can successfully install these modifications and enjoy improved performance on the road.