K&N Performance Air Intake System (30-9039) Seat Leon MK3 the diaphragm inside can rip

the diaphragm inside can rip which can result in excessive blowby entering the inlet manifold at idle (smoking from the tailpipe) or a loss of boost when driving

Can be used to monitor

compounded by those vehicles used on short journeys

Extends service interval of your K&N filter in dusty conditions

including a set of full colour instructions

K&N Performance Air Intake System (30-9039) Seat Leon MK3 the diaphragm inside can ripThe K&N DRYFLOW Air Intake System replaces your vehicles restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your vehicles engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engines RPM range. The DRYFLOW Air Intake System features an oil