RT2SJB

I am wondering if a K&N air filter placed into the stock air box will make a difference or do I need to replace the entire intake to make a difference in performance? Any ideas or experience?

OBSSSD

If you want to waste money for no gains then go ahead, but otherwise I suggest Airaid for a reasonable gain at half the price of many others.

not08crmanymore

no.None of them will do much of anything for you and depending on your car,may throw a check engine light. I had an 08 that I put an airraid setup in and it threw a cel.Took it out and all was fine again. The reality of it is,they are all pretty much no better then stock and some even worse.If you want power,get a supercharger!Now,I will say that VARARAM is one that will get you a little gain at speed and a 10th or 2 at the drag strip....if that matters.

b murph

Year and model not noted, K&N filters are known to flow better than stock filters with the option of being washed out and treated (lightly) with oil many times over. A CAI may throw a lean code and will require a dyno tune. Stay with the stock air box and look into a cat back exhaust system and work from there.

Rathmullan

You'll get a ton of responses with most attemping to justify their own decision for going with a particular type of system or brand. But as not08 posted when you mess with the factory set up there is potential to throw problem code. I guess one thing you need to ask yourself is whether you are willing to get a performance tune along with this modification --because it might be necessary. Too, the tune will most likely invalidate the GM warranty on your drivetrain and that's a risk you must be willing to accept.

The performance gains from air induction systems are elusive though most manufacturers are willing to claim them (but not in the context of the simple bolt on gain). But that doesn't mean the gains aren't real. It's difficult to dyno test the performance gain because the car is not moving during the test. Also, a system that does lower internal air temperatures relative to the oem system (but only when the engine is hot and perhaps only when ambient temperatures are above a certain point) can add horsepower that is both relative and conditional but it is horsepower nonetheless.

JW Motorsports

They make nice filters, but you won't notice much in performance from just a filter swap. I suggest one of their performance intakes or like mentioned an Airaid. Those work great

pahlbfishn

And remember this, not only will you not see much gain in performance but you will be sucking more dirt into your engine. More air flow=more dirt in engine.

JoesC5

Look at K&N's website and you will see that they advertise a 1 to 4 HP increase it you replace a stock filter element with their filter.. If they could advertise 5-50 HP increase, and back it up, they would.

The OE Donaldson PowerCore air filter(on 2006> Z06's and 2008> LS3's are the most advanced filter element available and will last for 45,000 miles, so why change it?.

lebvette

As most have said....no. There are several ways of getting cooler air to you current intake, which has been discussed on the forum. You might try that.

ButWhatDoIKnow

As an engineer explained it to me: These intake systems are essentially separators.

They separate the customer from his money.

VET4LES

michaelinmech

Which could be said about the entire car hobby !!

5W30

K&N filters are scientifically known to let larger particles into your combustion chamber than the extraordinarily well designed Donaldson unit that comes on the car.

SSWEET

Don't do it.....OEM air filters are just fine.....

HOXXOH

If you have no intention to do significant performance mods and need a filter change, stick with the stock replacement for your '07. It's the safe choice.