Hi,
I'm hoping someone can give me some advice on the following issue. I brought a vauxhall zafira 1.9cdti 150bhp 2011, it's had the dpf deleted, physically in the exhaust and no fault code in the ecu so I can only assume it's been coded out. The issue I have is the car will hold back on full acceleration, almost like it's pulsing full boost, I get fault code p2279-5b in ecu, stating boost leak.
The boost circuit is leaktight, vacuum, turbo and boost solenoid are all good, it's like the ecu is getting a signal of too much air flow via air mass sensor and momentary dropping boost.
The DPF has been removed and the saturation level is always 184% but no fault code and it will not try or do a manual regen.
Could the 184% saturation level of DPF but the air flow being less restricted by a DPF removal cause the boost leak fault?

you have a leak in the intake system ... you have to search in all places ...vacum pipes intake manifold throttle body ..there must be somewhere small leak ...

connect new ecu and program and I can help him with programming