|
Let's think about some fundamental principles: the only way the K&N or any filter can increase airflow (with a given pressure drop across the filter) or reduce the pressure drop (for a given airflow) is by reducing the restriction. This happens either by a greater surface area with the same size of micropores in the filtering element, or the same size of pores, and a larger overall element area. I've seen the K&N and it has LESS element area than the stock paper unit. So, the pores have to be larger, which means that along with increased airflow is increased particulate size entering your engine.
If I was living in a dusty area, the K&N would not just be at the bottom of my list, it would be right off it.
The B21/23/230 engines ranged from, what? 100-114BHP? Our Dodge Caravan has a 3.8 liter (65% larger than a B230) and its air filter is about the same size or a little smaller!! Assuming the Chrysler engineers are not stupid, the Volvo filter has to be more than enough for the job.
--
Bob (81-244GL B21F, 83-244DL B23F, 94-944 B230FD; plus grocery-getter Dodge minivan, MGB, and numerous old motorcycles)
|
