Practical guides on reading, recovering, cloning and modifying engine, gearbox and body control units: which file to use, how to read the label, how to write safely.
Ford part numbers look cryptic until you know the pattern. For ECU files the pattern is everything: two units with the same Siemens or Bosch hardware…
Exhaust gas recirculation sends a portion of the exhaust back into the intake to lower combustion temperature and NOx. On diesel engines the valve and cooler…
Every ECU story that ends badly starts with "I didn't save the original". An ECU backup before tuning is the cheapest insurance in the trade: it…
The immobilizer lamp flashes, the engine cranks or stops after a second — and the first question is always the same: immo off or key programming?…
When an engine ECU fails, a used unit is usually cheaper and faster than a new one. The problem is the immobilizer: the used ECU belongs…
A car that cranks but won't start after an ECU swap is the most common support question we receive. Nine times out of ten the file…
The Siemens Sirius 32 (and its Sirius 32N / 34 variants) controls Renault petrol engines from 1998 to about 2006: Clio II 1.4 and 1.6 16v,…
The diesel particulate filter is the component that generates more workshop visits than any other emission part on a modern diesel. Blocked filters, failed regenerations, differential…
The Delphi CRD3 family controls the Mercedes OM651 2.1 CDI diesel used from 2008 in the C-Class W204/W205, E-Class W212, GLK, ML W166, Sprinter W906, Vito…
The Delphi DCM3.5 is the engine ECU of the 8-valve 1.6 HDi (DV6D / DV6DTED, 92 hp) Euro 5 engine fitted from 2010 to the Peugeot…
