There are three different types of intakes:
Closed Box (ie. Volant, Outlaw)
Open Element (ie. AEM, K&N FIPK)
Drop In filter (ie. K&N)
When looking at manufacturers claims, one shouldn't just look at the HP numbers:
You need to look at the highest average airflow which is directly related to torque (subsequently HP).
Manifold pressure (MAP) is a measurement of restriction, the higher the number the less restriction, so this is another big point.
IAT (Intake Air Temp) recovery is another big factor in narrowing down a good intake.
Closed box intakes do better at lower speeds as there won't be as much of a heat soak issue. The open elements use metal shields which absorbs heat (heat soak).
The open element intakes drop temperatures a lot quicker at higher speeds which in turn creates denser air. The denser air allows for more airflow, which then of course makes more power.
This all being said, intakes (as well as exhausts) are a matter of personal preference, just taking off the stock tube takes off a lot of restriction. Realistically, the differences between intakes (ie. open vs. open and closed vs. closed) will be minimal. One thing I do encourage anyone who purchases an aftermarket unit to do, is check the fitment every couple hundred miles, these things find a way to wiggle loose and can cause a drop in performance as well as MPG.

Will check mine thanks
Jim
2004 SILVERADO 2500HD LS
Pro Comp Leveling Kit
285-75-16 Cooper ST All Terrains
Pro Comp Programmer
Bilstein Shocks
Linux Bed Liner
Tinted Windows
Other rides:
1967 Landcruiser <350 Chevy>
1970 Camaro
1990 Geo Metro Convertible
2007 FJ Cruiser



Good post Jenna. This should help out the nooblets shopping for a CAI. I personally think this should be a sticky!!!!!
2005 Chevy Silverado Z71 in Black
6" BDS Suspension Lift | 3" BDS Body Lift |17" Rock Crawler Stellies | 35" Cooper STTs | 4.56 Yukon Gears | AirAid CAI and TBS | Flowmaster 40s | HyperPAC Programmer
2001 TJ Sahara in Sienna
3.5" RE Suspension Lift | 33x12.50 Baja MTZs | D30/44 | ROKMEN Merc Front Bumper | Warn Rockcrawler Rear w/ Carrier | Warn M8000 Winch

Great info!!!!! I second the Sticky
BRYAN
"IF YOU DON'T TREAT IT LIKE A TRUCK IT'S JUST A REALLY BIG CAR"
02' Avalanche 2500 Onyx Black
8.1L Vortec
43,000 miles
good info on intakes
2000 GMC Sierra Ext. Cab 5.3L
Thanks guys, I hope this will help folks out in their quest for a new intake!![]()

they should sticky the tbs thread and cai thread and the others.
Inform those who dont know yet![]()
2004 4.8| Custom Paint| Tint| De-badged| Shaved Tailgate| Rollpan| Smoked Tails| Color Matched| Lowered 5/8| Suede Interior| Color Matched Interior| Indash & TVs| Mids-Lows & 2 12" CVRs| 500 & 1100 Interfires| Soundeadener| Outlaw CAI| Magnaflow|
Future Mods: 6.0 LQ4/9| Bags|
Thanks guys, we tested a bunch of intakes on the dyno paying close attention to all the above mentioned factors. If you have any questions, you know where to find me!![]()
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