Well my K&N Airfilter arrived and its fitted along with doing the airbox mod at the same time,and although i do not notice much of a change in power the responsiveness of the car is far better.
I could not believe how full af 5hit the old filter was,so a good clean out and all is good.
i am still thinking about blanking the EGR as spatch has do and explained on this thread http://forum.vectra-c.com/showthread.php?t=51953,but after doing what i have done it seams to have eliminated any flat spots
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