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GGR 285 bhp
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GGR CONVERSION FOR THE FOCUS RS – The story so far
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To enable us to release more power from the Focus RS engine without compromising reliability, we have undertaken a series of mechanical modifications. These combined with reprogramming of the engine management system has produced a power output of 285 BHP.
In our opinion, due to the constraints of mass production, the standard engine suffered from restrictions in the intake and exhaust systems, and these are the areas that have received our attention.
power comparison graph....
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ECU upgrade
The ECU upgrade can be installed and set up at our workshop facility or offered on a Superchips Bluefin.On a standard car power is increased to a respectable 237bhp at 5525 Rpm.This program is compatible with all of the following modifications.
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Exhaust Downpipe
The original item has a very tight 90-degree bend and a low flow catalytic converter. Our replacement item uses a high flow catalytic converter, increased pipe diameter and is a smoother flowing shape.
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Air Filter Box
The standard plastic air filter assembly uses a flat panel filter, and subjects the intake air to many changes of direction, through numerous shaped and sized holes. Our replacement item is manufactured from spun aluminium, and picks up cold air from the left hand front wheel arch area.
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. Internally there is a large cone shaped re-usable filter with a traditional bell mouth shaped adapter to channel the inlet air through the mass air flow sensor, towards the engine. This is a far less restrictive arrangement.
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Cylinder Head Porting
The inlet and exhaust ports in the original cylinder head have a rough-cast finish. Our cylinder head is hand finished (polished) to improve the gas flow through the inlet & exhaust ports giving a direct increase in horsepower. In addition, the valve seats are cut to three angles, and the valves refaced.
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| Exhaust Manifold *
The Focus RS engine was originally designed to have a fabricated steel exhaust manifold. This type of manifold has a far greater flow capability than the usual cast variety. Unfortunately, the manifold that was made for the production engine failed during the rigorous Ford durability testing and was hurriedly replaced with the simple cast iron item that is now fitted to the production car.
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We have commissioned the design and manufacture of a high quality fabricated stainless steel exhaust manifold. This is designed to give excellent flow characteristics whilst still fitting within the tight confines of the engine compartment.
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We have tested the new manifold and have achieved a 14 BHP increase in power on top of the previously described improvements. The free flow characteristics also dramatically increases response and gives a raw edge to performance that was previously lacking.
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| Conclusion
This is the story so far, we have lifted the maximum torque up to 402Nm @ 4125rpm (the original value is 302) and the maximum power to 285 BHP (with the standard being 212)
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