Astra Mk3 (2 litre XE)
management systems being so heavily biased towards economy
and emissions, it's only natural that there's a trade-off
in terms of performance. Due to the expense of reprogramming
an original system it now makes much more sense to fit a
fully programmable ECU instead.
Astra was such a case. With upgraded cams, the already-chipped
ECU was coping, but it made sense to improve the engine
breathing as well. Along with this, more fuel would be needed,
so larger injectors would be required.
the Canems ECU meant bike throttle bodies could be adapted
to fit the XE engine. In this case, Suzuki GSXR600 parts
were used. Fuel injectors were upgraded to 330cc/min flow
rate items and fuel pressure raised from 2.5 to 3 Bar.
throttle butterflies and inlet runners for each cylinder
provide much easier breathing. Furthermore, the restrictive
air-flow load sensor was removed in favour of a MAP sensor.
Rather than relying on a rotor-arm and distributor cap which
can easily fail in competition, the ignition system was
upgraded to wasted-spark with modern coil pack.
sensors and crankshaft sensor could plug straight in to
the Canems ECU, as could the main relay which provides power
to injectors, coil and oxygen sensor.
car, the existing inlet manifold was modified by the ever-helpful
Bogg Brothers nr. Malton in North Yorkshire. The motorcycle
throttle bodies were respaced slightly to match the port
spacing on the XE cylinder head. Along with making things
simpler, adapting the original manifold also meant that
a custom-made fuel rail was not required.
is currently being prepared for further competition work
later in the year. In this guise, power has been rolling
road tested at 191bhp. Thanks once again to all at the Fuel
Injection Centre in Bolton for the rolling road work.