datalogging with K&N drop-in
Thread Starter
Joined: Sep 2006
Posts: 2,331
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From: Hermosa Beach, CA
datalogging with K&N drop-in
Everyone has seen dynos of the power gains with the K&N drop-in. I was curious to see how it affected the barometer reading, i.e. pressure drop, compared to the stock filter.
The K&N was taken recently, the stock taken about a month and a half ago and that filter had ~10k miles on it. I had to dig through some old datalogs where the air temps matched as closely as possible to eliminate that variable. In turn, the 'load' values also matched as closely as possible. The data is pretty freakin close from 2500-5000 rpms and the air temps are off by less than 1 degree F past 5500 rpms.
Anyways, the K&N showed a reduction in pressure drop by ~1kPa, +/- 0.25 kPa vs the stock air filter.
The K&N was taken recently, the stock taken about a month and a half ago and that filter had ~10k miles on it. I had to dig through some old datalogs where the air temps matched as closely as possible to eliminate that variable. In turn, the 'load' values also matched as closely as possible. The data is pretty freakin close from 2500-5000 rpms and the air temps are off by less than 1 degree F past 5500 rpms.
Anyways, the K&N showed a reduction in pressure drop by ~1kPa, +/- 0.25 kPa vs the stock air filter.
