got sorted..turns out all the caliper sliders were seized, new pads all round and new front discs...and off cause a new air filter.. car is 10 times better now. garage was good and i didn't get any hassle. removed the egr valve and the carbon build up was really bad, in fact the top of the carbon was the perfect shape of the bottom of the egr. the hole was about 5mm so scraped all the crud out and re built it. all good thanks