Ive got a xr2i 1800 16v and ive just put the rst cams in. It idles lumpy like alot of people said and is fixable with a remap but at low revs when braking for a junction or in traffic sitting still the revs drop below 1000rpm and cuts out. Does anyone know how i can fix this? Someones told me by putting 2.0L MAF senor will fix it? Can anyone help me been on fiestaturbo but noone seems to answer