Mapping and carbon cleaning

For remap & EGR delete I used AD Autotechnik in Hobbs industrial near East Grinstead.
They are only an agent for a re-mapper, can't recall which, but I wanted small & local which they are.
Happy with the result, nice pair of guys, cost £500.
Re. swirl flap delete I chose to repair & keep them. I fitted a pair of exchange remanufactured manifolds from Poland, £100 Ea.
While all the ducting was off I threw it all in caustic soda and painstakingly cleaned the inlet ports with rag, as far as I could reach.
Hope that helps