Performance Filters
 

Dear All,

I recently saw a commercial about performance K&N parts, I believe air and fuel filters is what they're selling. These parts supposedly add some HP and enhance the sound of the engine.

My questions are:

1. Will these parts increase the wear on the engine thereby reducing the lifespan?
2. Would you recommend this for a 2007 ML350?

Thanks and regards,
NSZ

Dear ED209,
if you love your ML, please don't do it.
It would be same thing as driving without filter. Just take your stock filter box off and see how nice the engine will sound, almost as a racing car and it will increase some hp.
YES, for No.1.
NO, for No.2.
I don't think K&N design engineers (if they even have any) are better then the ones working for Mercedes Benz.
I would stay away these jokes.
How can they add hp by diferent fuel filter? Your fuel rail has constant pressure of about55psi and I believe the fuel pressure regulator is build into your oem filter.
More air into manufold and your computer will atomatically supply more gas to keep same mixture ratio so throttle respond is there but I don't know about fuel economy.
Maybe other members who tried and use K&N product have different opinion.
Good luck.
Bernard

Thanks gents for your replies...I do love my car and the last thing I wanna do is wear it out. Looking at the stats from the link provided and by your explanations I just realized how bad these filters could actually be for the car. Not to mention all the dirt buildup that could accumulate. Even if the issue WAS debatable, frankly its not worth the risk...

Thanks Again,
NSZ

I thought that it was the oil that you treat the K&N air filters with that actually attracts the dirt to the filter element. I changed to a KN air filter in my 560SL with my mechanic's blessing (MB cert), but then again, I only drive it about 3-4,000 miles per year. Since mine is not a race engine that will be rebuilt frequently, I'm likely going to change back to the stock MB filter.

If K&N filters are the magic cure all giving
Better fuel economy
More Power
quicker acceleration
Longer engine life.
1,000,000 warranty (the filter and not the engine)

One has to wonder why major auto manufactures have not used K&N filters nor cloned them, since either way the cost would be the same. Certainly they have tried them.

Bill

What about the oil itself; what keeps it from getting sucked into the engine (and messing up the mixture!)?