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Answer: The Corsa group N system was originally designed in 1993 and was used by Steve Green to win class using a Corsa 1600 GSi in the RAC rally. The standard engine would normally produce 110 bhp. When the group N kit was fitted and tested with standard cast manifold, but with uprated downpipes and freeflow exhaust system, the engine produced 128bhp. The torque curve was much smoother and stronger than the standard engine, because the system uses throttle angle sensing instead of air flow metering. The throttle response was dramatically improved. The driver reported the engine was much nicer to drive in every part of the rev range and under hard acceleration. The group N system comes complete with a fully reprogrammable ECU (MBE967E, there more information on the web site about the function of this ECU), a custom made wiring harness, modified idle control valve. You would also be able to fine tune the fueling and ignition if required, to suit your engines own characteristics and fuel available in your country. It could also be reprogrammed to accommodate any changes you may wish to make to the engine.
The MBE967E is now longer avaible, The same kit can be supplied with the current MBE9A4 and requires a Coil-4
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