How do you clean your IHKA system?

[shogun]

there were a lot of discussions years ago on another forum and they came to the conclusion that it is not possible.

[genphreak]

You could definitely retrofit a filter by changing out the entire IHKA box with the later filtered one. But that would mean pulling the whole dash to pieces and re-assembling.

Assuming you have a non-sword model (not an M20 or M30 powered car, only a few transitional M50 cars AFAIK), you may be able to do this without replacing the entire IHKA box. But it depends on whether the main IHKA housing on these (your) car/s has space to allow the filter to slot in in front of the AC evaporator- which is what the factory filtered cars have. This is directly between the evaporator and the fan blower motor just inside the firewall).

You'd have to remove the side of the evaporator box as well as the fan control module in front of it and use a torch to see