So what is Flex Fuel? It is a system which allows you to run E100 (100% ethanol) or 98 RON unleaded petrol or anywhere in between on the same car with the same fuel system.
The test car is an Evo 9. In order to manage wide range of parameters of the flex fuel system, it is fitted with a wideband O2 sensor, fuel composition meter, Insight Motorsports Evo twin pump upgrade, ViPEC V88 ECU, Xspurt 1000 injectors, fuel pump controller and digital individual cylinder knock control.
The test engine is an 124000 km old Evo 9 engine (as per the photo) that is totally standard mechanically apart from the aforementioned support system improvements and a Turbo XS 3 inch exhaust.
Once more road testing with varying levels of fuel composition is completed, we will replace the wastegate actuator since it has been limiting the boost due to its age (original turbo remember). We expect the engine to run about 20 psi, which from our experience should produce close to 260 kW ATW on E100.
The next step will be to install an adjustable fuel pressure regulator to allow for an increase in fuel pressure. This will allow higher injector flow capacity and therefore more boost.
Flex Fuel kits will be offered from early 2011.
This particular car has a 700 hp race engine ready for installation and will also be setup with Flex Fuel.
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