Hi.
'I think this might be a bit more complicated. I have a Golf 4 TDI with the AHF engine and only a diverter valve in the intake manifold, so it's only EU2 compliant!'
The ASV, with the same 81 kW engine, already has a pneumatically controlled throttle/shut-off valve in combination with the EGR system, making it EU3 compliant!
That means a new control unit, control pneumatics, and of course, the exhaust emission test reports!
I don't remember the exact details, but no other fuel injectors were needed!
In my opinion, it doesn't seem to be proportional to the tax savings.
I would rather wait and hope that the retrofit particulate filters will soon offer tax benefits.
The filter costs approximately 500 euros.
Best regards, Ferdi.
Translated on 03-10-2026, 20:27.
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