I know lot's of people use K&Ns and some people swear by them. I've also heard many people say they can't feel anything at all.

Are there any numbers anywhere that support the argument that they would increase airflow enough to give a boost in HP? It doesn't necessarilly have to be about the XFire. I'm just looking for numbers from any stock performance vehicle upgraded only with K&Ns.

 

http://www.knfilters.com

In their "facts" section they've got links to two independent lab tests showing airflow comparison charts. The K&N flows considerably more air than most stock filter elements.

I'll see if I can dig around the stratus board a bit and look for some dyno charts. I know we've got a couple floating around somewhere where someone had dyno'd their car with nothing more than a k&n filter. It showed like a 4whp gain.

 

i thought that the car is based on ram-air.


where are the filters to change it?

 

The car is most definitely not based on anything even remotely resembling ram-air. In fact, the Pontiac Grand Am advertising "ram-air" (and Trans Am WS6 of days past) simply use a marketing ploy, a neat idea, and some fancy hood scoops to push the product. It don't even have a true ram air effect.

The filters are located inside separate compartments inside the engine cover. Pull the cover off and you'll see where they are located.

 

how do i pull the cover off without breaking it?

 

It won't break. It just pulls off.

 

Not sure about all that but i have the k&n filters & nothing to talk about just the fact is that yeah i got a k&n air filter. That's it nothing more nothing to even talk about sighs.

 

I installed K&N's and could not really tell much difference if any... Just my 2c.

 

So why go through the expense? Are there other benefits?

 

i actually thought i read the K&Ns were cheaper than the MB replacement air filters --

 

There has been independent testing of K&N filters, which proved them to be rather inefficient when it come to cleaning the air drawn by the engine, resulting in very high amounts of silicone contaminates in the oil supply. This is why I steer clear of high flow filters. They cause excessive engine wear, something K&N probably doesn't tell it's customers.

 

Hey dynamicS, do you still have your Sprint Booster?

 

sorry man, sold it a couple weeks ago. but you can try SLKfans.com he's cheaper than the manufacture.

 

Alright thank you!!

 

Washable, no need to buy replacements.

 

Lifetime air filter and 1 million mile limited warranty.

 

I have the K&N's but I don't really think it makes any more power, Maybe 1 or 2 hp but who knows for sure. I do like that I just have to clean and re-oil instead of buying new filters.

 

I will never use K&N's again. I did have a pair in my Crossfire at one point, but after reading up a bit on them, I would recommend to anyone to stay away.

What it boils down to is that they flow a little bit more because they do not filter nearly as much dirt.

Is the tiny hp increase worth the extra dirt that is getting into your engine?

http://home.stny.rr.com/jbplock/ISO5011/SPICER.htm


This is also an interesting test, although not nearly as scientific:

http://www.bobistheoilguy.com/airfilter/airtest3.htm

 

I noticed a bigger difference in my Mustang than I did with the Crossfire.

 

If you'll notice, that million mile warranty is on the filter, not your engine!