Tuning a Factory Five Cobra Replica with Velocity Stack Filters

When it comes to tuning a high-performance vehicle, there are many options available. However, what happens when you're working with a system that doesn't have modern technology like mass airflow sensors or manifold absolute pressure gauges? In this article, we'll explore the challenges and solutions of tuning a Factory Five Cobra replica with velocity stack filters.

The story begins with a birthday gift - a dyno tune for my wife's husband. The car in question is a Factory Five Cobra replica that was built about 5 years ago, powered by a Ford crate 347 ci 450 hp engine. With no MAF or MAP to rely on, the tuner had to get creative.

The approach used was trial and error, with the tuner relying on experience and a healthy dose of experimentation. This involved driving the car, making changes to the computer after each pass, and repeating the process until the desired results were achieved.

One of the key components in this system is the velocity stack filter. These filters are designed to improve airflow and increase power output, but they can also be tricky to tune. In this case, the tuner replaced the foam with K&N's and oiled them to prevent any issues.

However, there were still some challenges to overcome. The car would sometimes backfire, and twice caught a foam filter on fire and melted it down. To address this issue, the tuner installed six air filters running down the side of the engine - one for each carburetor.

The carbs themselves were replaced with triple Mikuni sidedraft carbs, which added an extra layer of complexity to the tuning process. Despite these challenges, the tuner was able to achieve success using a combination of experience and persistence.

In conclusion, tuning a high-performance vehicle without modern technology can be a challenging but rewarding experience. With creativity, experimentation, and the right components - like velocity stack filters - it's possible to achieve great results even in the face of adversity.

Velocity stack filters