I have a Blitz SUS Filter fitted.
For me, improved economy by about 3mpg over a standard setup. Engine feels a lot freer, especially in the upper rev-range. Which as I have a 2.0lt V6 with a short stroke engine is beneficial.
I also bought the K&N Panel filter and fitted that, although better than a standard filter doesn't quite match the Blitz I'm afraid so I refitted the Blitz after a good couple of months comparing the 2.
The only thing, and it is the only thing, is it makes the Engine Bay look untidy....
But seeing as I generally have that closed when driving, I can live with it...
