Well throttle body has been replaced, so no leaks so that's that sorted but still same no difference, still hesitates, lumpy when cold start, when hot idle levels out and not so lumpy, sometimes when pull up to junction revs hold to about 1200rpm for 5-8 seconds then slowly drops back to normal, when turn car off then go to restart it idles lumpy and really low revs like ready to cut out then picks back up after about 3-5 seconds, checked everything possible, boost on idle sits at 0.6 then when fully boost goes just above the 1.0 on my gauge. Any body got any thoughts where to go next