Yea mine is driving fine really over 2000 revs, under and on idel splutering and black smoke,have changed coil packs,spark plugs,maf sensor,injectors,temp sensor,second lambda sensor,two boost hose's!,cleaned fuel rail,fuel return pipe,checked all other pipes!,comes up on diag - muiltiple missfire!,the lambdas are maped out due to decat!,there does seem to be black residue under bonnet nearer the back!,thinking it might be hairline crack in manifold hard to see though!