Originally Posted by vstech

if you drive a suupercharged race car or a HUMONGUS vehicle with a gasoline engine there are mild benefits to the things. not on our cars though. the diesel engine is fuel managed, not air managed, so all you will be doing is ingesting increased particulate to the engine. and the motors have waaaay more air than then need with the mild horsepower they produce. put in a HUGE turbo and double the fuelflow from the IP and it'll still not be out performed by the K&N filter...
in other words,
No.
it won't help and it can hurt.