Lambda and catalyst monitoring on MED17 petrol
MED17 lambda catalyst. MED17 petrol ECUs run upstream and often downstream lambda. CAT off disables monitoring when the catalyst is removed — off-road…
EGR coolers and the EDC17 map pack: stock vs ‘off’
EGR off EDC17. EGR off in a flash is a delete. Stock EDC17 uses EGR for NOx. Coked coolers are a hardware fault; flashing EGR off to hide a cooler is…
China 6 and EPA calibrations are not Euro SW numbers
China 6 EPA ECU files. The same engine can have Euro, EPA and China software. Copying a European Stage 1 onto an EPA MG1 or a China 6 EDC17 is how you…
MOT, ITV and original ECU files after a failed remap
MOT ITV original ECU file. Inspection regimes look at lamps, readiness and sometimes tailpipe. The clean workshop move after a bad flash is to put the…
DPF pressure sensors and regen maps: what a stock EDC17 actually does
DPF regen maps. A stock EDC17 soot model uses delta-pressure, temperature and calculated load. Forced regen from a diagnostic tool is not the same as…
AdBlue / SCR in the diesel ECU: dosing, quality sensor and limp-home
AdBlue SCR ECU. SCR maps sit next to DPF maps on Euro 6 diesels (EDC17C64, MD1CS004, SID310, DCM6.2…). The ECU tracks urea quality, tank level and NOx…
OPF / GPF on petrol ECUs: MED17, MG1 and SIMOS
OPF GPF petrol ECU. Otto particle filters showed up on later Euro 6 petrol cars. OPF off is a petrol delete, not DPF off. MED17.5 on an older TSI often…
Euro 7 delay: what actually changes for chiptuning workshops
Euro 7 chiptuning. Euro 7 has been delayed and reshaped in the EU debate, but Euro 6e and existing DPF/OPF/SCR hardware are not going away. Workshops…
Euro 6d and RDE: why a ‘Stage 1 only’ file still has to respect the aftertreatment
Euro 6d RDE ECU. Real Driving Emissions pushed NOx control out of the NEDC lab. The ECU still runs DPF, EGR and (on many diesels) SCR dosing on the…
Euro 5 vs Euro 6 diesel ECUs: DPF, EGR and what the flash actually contains
Euro 5 vs Euro 6 diesel ECU. Euro 5 Bosch EDC17 still has DPF and EGR maps you will see in WinOLS. Euro 6 adds more NOx control (SCR / AdBlue on many…