I have a Opel Corsa a with a C20XE engine, it runs a DTA S40 ECU
Engine Setup:
12,5:1 Wössner Pistons
FCP Conecting Rods
original polished camshafts 278° 11,2mm lift (shims)
cylinder head machining (i ported and polished the inlet/exhaust channels)
45mm QED ITB (i ported and polished the ITB for finish)
Lexmaul exhaust header
It was the first time for me, i am happy with the result