Hi fellas, have a problem with a lumpy idle sounds like its got a hot cam fitted to it through the exhaust but hasnt. Engine seems like its pulsing on and off and gasping for air through the exhaust, if that makes sense. Checked plugs, intake pipework, air box and nothing amiss. Original EGR valve still fitted. No dash lights. Seems to pull ok once revs go past 1700 revs. No lights on the dash. Any ideas? I did find this muck over the heat sheild which i hadnt noticed before......but thats about it really...cracked exhaust maybe?