Reading about filters and efficiency has got me wondering if there could be any benefit to adding an oiled foam pre-filter to a standard OEM style paper filter. Especially as we know that modern EFI systems can deal with intake restrictions without harming efficiency.
My idea is to get a sheet of foam filter material, preferably urethane with high PPI count, and wrap it over the fresh air side of the paper filter element. This way it will catch the fresh air first. Since the standard paper element will still be there, the worst that can happen is that it will do nothing. If the foam looks like it's picking up dirt, then so much the better. I also have a restriction gauge on the housing.
Please excuse my tendency to over-think and over-kill this. I'm an engineer after all
My idea is to get a sheet of foam filter material, preferably urethane with high PPI count, and wrap it over the fresh air side of the paper filter element. This way it will catch the fresh air first. Since the standard paper element will still be there, the worst that can happen is that it will do nothing. If the foam looks like it's picking up dirt, then so much the better. I also have a restriction gauge on the housing.
Please excuse my tendency to over-think and over-kill this. I'm an engineer after all