Turboman
Mab An Gov
Nothing wrong with whatever power engine anyone puts in, but only if they also upgrade 'the rest' to suit, particularly tyres and brakes. What seems senseless to me is the 'I need 300BHP' people who have done literally nothing to the rest of the vehicle and expect it to stay together and running .. Adding a K&N smacks a lot of this to me. Only time I'd use a K&N is a feck-off large one on a wide, long inlet pipe in the back or roof of a racer, with a custom airbox and kept well out the way of water!
The shops and products don't help either .. 'buy me, I can add 10% power'
Having said that. I am seriously thinking of trying a boost pin just for that little bit extra off-road, currently the whole injection system is almost standard, no tweaks or additions, only an egr deletion and a straight through exhaust and my air inlet system is good, is standard with a snorkel, and works well.. On road there's plenty for cruising at 65-70 ish fully loaded (It actually goes well over 85+ but I don't like the noise, vibrations or the feeling of extreme tyres at higher speeds!)
Boost pin by all means. But on a diesel, it doesn't need increased airflow. Not like a petrol engine where increased fuel needs increased air.