On the laggier side due to the larger turbine housing, it still went extremely well on the road. The car had real character and plenty of old-school appeal. However, a smaller turbine housing on the GT30 would improve spool-up and sharpness considerably.

For this session, we laid down a solid base map to work from in the future. The custom ECU tune gave us a reliable starting point for the next stage of development. The Sierra YB Cosworth is one of the great icons of performance car history, and it is always a pleasure to work on one.

This one will be back. We look forward to fitting the correct turbo housing and extracting the full potential of this YB Cosworth engine on the dyno.

The post Tuning the Sierra YB Cosworth (2WD) first appeared on FC TUNING.

Accept this was no ordinary Ford Puma. Shoehorned in was a Ford Sierra Cosworth Engine. Tuning commenced initially without its restrictor and then with, as with this particular race series Engine power had to be kept to a minimum.

This was fully equipped with a Sequential Shift Gearbox for minimum gear change times and all is powered by an old skool Motec Engine Management System

The post TUNING THE FORD COSWORTH (Puma) first appeared on FC TUNING.

Every now and then, a project comes along that’s just a little different from our usual Japanese turbo icons. This time, it was a trip up to Hypertech in Scotland to dyno tune a Ford Fiesta ST that had been given the supercharged treatment.

The Setup

This car retains its factory engine, but thanks to a well-executed supercharger conversion and supporting upgrades, it’s far from your standard hot hatch. Compact, light, and already sharp-handling, the addition of boost transforms the Fiesta into a true pocket rocket.

On the Dyno

Strapped down at Hypertech, the Fiesta came alive as we refined the mapping to get the most out of the setup while keeping reliability in check. The supercharger delivers instant throttle response and a surge of power that perfectly suits the car’s playful chassis.

The Result

The end result is a Fiesta ST that feels every bit at home tearing up Scotland’s twisty country lanes as it does blasting down a straight. With its lightweight frame, boosted punch, and stock engine still holding strong, this little hatch proves you don’t need big displacement to have big fun.

At FC Tuning, we love working on all kinds of builds – from JDM legends to hot hatch heroes – bringing out the best in every setup.

The post TUNING THE FORD DURATEC (ST) first appeared on FC TUNING.

Superb response and power from this 1.8T boosted engine.

The engine was just running in so a remap for high boost will come later.

The post TUNING THE FORD ZETEC (ST) first appeared on FC TUNING.

The post TUNING THE FORD COSWORTH (Sierra) first appeared on FC TUNING.