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The 1987 Buick Grand National is an iconic vehicle that has garnered a loyal following due to its performance and unique styling. With a turbocharged V6 engine, this car was a standout in the muscle car era. However, many enthusiasts seek to enhance its performance further. This article explores the real-world results of tuning the exhaust and ECU, leading to significant horsepower gains.
Understanding the 1987 Buick Grand National
The 1987 Buick Grand National was produced during a time when American muscle cars were evolving. With a 3.8-liter turbocharged V6 engine, it produced around 245 horsepower and 355 lb-ft of torque. This performance made it a formidable competitor on the streets. However, many owners felt there was more potential waiting to be unlocked.
Initial Performance Metrics
Before any modifications, the stock 1987 Buick Grand National was tested on a dynamometer. The results showed:
- Horsepower: 245 hp
- Torque: 355 lb-ft
Modifications Made
To achieve the desired horsepower increase, two main modifications were made:
- Upgraded Exhaust System
- ECU Tuning
Upgraded Exhaust System
Replacing the stock exhaust system with a high-performance setup allowed for better airflow. The new system included:
- High-flow catalytic converter
- Performance mufflers
- Larger diameter piping
ECU Tuning
ECU tuning involved recalibrating the engine’s computer to optimize fuel delivery and ignition timing. This adjustment maximized the engine’s efficiency and performance potential. Key changes included:
- Increased boost pressure
- Adjusted fuel maps
- Enhanced ignition timing
Results After Modifications
After the modifications were completed, the Grand National was once again tested on the dynamometer. The results were impressive:
- Horsepower: 345 hp
- Torque: 400 lb-ft
Real-World Driving Experience
The real-world impact of these modifications was immediately noticeable. Drivers reported several enhancements, including:
- Improved throttle response
- Smoother acceleration
- Enhanced exhaust note
Conclusion
The 1987 Buick Grand National, with the right modifications, can achieve remarkable performance gains. The combination of an upgraded exhaust system and ECU tuning resulted in a substantial increase of 100 horsepower. For enthusiasts looking to enhance their Grand National, these modifications offer a compelling path to unlock the car’s true potential.