i have managed to now tune it all up and it is running well.
I also got to race the mate i always ride against and my bike is a little quicker than his. Before i put the exhaust on we were always dead level.
I have to say that i am happy with the purchase of the exhausts, little bit of work ( tunning did drag out but i would put that down to my lack of carby adjustment experience). And the new deep note of the bike is awesome.