The signum is still causing a head ache, inlet changed and swirl flaps all changed, egr valve cleaned, boost sensor changed and cleaned area, dpf removed and cleaned, new exhaust temp sensor, all connections and earths checked and cleaned up, yet still code p0650 and no management indicator light at all showing on the dash! Heavy black smoke under load and acceleration, checked for boost pipes split and all look nearly new no splits!!! Any ideas what too try next as may be a trip too vx at the weekend.

Basically black smoke on acceleration til 4k rpm then limp mode no smoke no power?. Dpf cleaned and now at 6% saturation. Stuck for ideas...