I'm looking to do some serious upgrades to my stock 02 4x4
and thought this would be a good time to get some expert opinions on the major players in the air filter business for our trucks.
I currently have a stock truck that I intend to do induction, exhaust, chip, and gauge mods to. I don't need anything fancy or exceptionally strong, as I have PMRs
and don't care to test their limits. I'm looking at getting between 300-325 RWHP
on a high chip setting, and have no plans to go with bigger injectors in the future.
What I would like is to hear from people that have tested all the prime contenders, or at least some of them, and have some accurate numbers such as how many cfpm each will flow, and how well each product protects the engine from particulates. As I often travel on dirt roads, that can be a big deal for me.
The contenders that I am considering are as follows:
AFE Stage I - I'm not sure that I'd ever want this, as it seems to be the little cousin to the Stage II and isn't significantly cheaper.
AFE Stage II - From what I have heard this intake flows better than all the others and thus is capable of supporting big turbos and high horsepower. It is also one of the pricier intakes you can buy.
AIS/Donaldson - I have heard that this intake is basically what the 6.0L PSD
trucks use, and that it's filtration is far superior to the stock airbox and beats all other aftermarket products as well. I have heard mixed reviews about how much air it will flow without the fender sleeve, however. Does anyone have decent numbers on a donaldson with and without the fender sleeve? (I have also heard that the fender sleeve can cause water and snow to shoot up into the intake. Is there any truth to this?)
Tymar - Certainly the DIY
cheapest thing out there, but how well does this thing filter, and how well does it flow?
Thanks for any information y'all can provide. I've looked at several sites that sell these, but their advertisements are almost always more fluff than stuff.