Review on π K&N Cold Air Intake Kit for 2008-2010 Ford Super Duty (F250, F350, F450, F550) 6.4L V8 Diesel - High Performance, Guaranteed Horsepower Increase - 50-State Legal - Model: 57-2576 by Justin Cage
Big improvement
Installation is a bit tedious following the good instructions provided but can be completed in less than 2 hours. As for the system, I would give it an 11 on a scale of 1 to 10. The boost pressure went from 20 to 35 when accelerating. Fuel economy increased by 1.5-2 mpg. The annoying "Clean exhaust filter" message along with the excessive smoke has stopped and overall I would say the engine is running much better than before.
- This is great
- Some bugs
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