The silicone parts included with the aFE kit were nice and supple, like a high-end scuba diving mask, and we had no problems installing them. This kit also had a CarB number included with it. The one-piece plastic intake tube made the install a breeze
Msrp: $311.12
Install 1-10: 9
Filtering Element: Cotton Gauze
Average Peak Torque: 199.3 Lb-Ft
Average Peak Horsepower: 153.0 Hp
Pros:
Some kits didn't even include a pCV hose. With this kit, we got too much hose and had to cut it.
Supple, high-end silicone
Good separation of filter and engine bay
Cons:
Supple silicone of filter means a lot of filter vibration when running
Metal cold air housing interfered with winch cables and headlight wires.
Due to the interference, we weren't able to access one mounting hole without rerouting our winch cables
The Mopar kit bears many similarities with the aEM kit. There, we said it. Both include a throttle body spacer, both include spacers for the throttle and kick-down linkage, the intake tubes are the same diameter and dimensions, and the cold-air housings are of the same design. The Mopar kit uses a cotton gauze filter where the aEM kit uses a dry filter.
Msrp: $359.00
Install 1-10: 8
Filtering Element: Cotton Gauze
Average Peak Torque: 199.8 Lb-Ft
Average Peak Horsepower: 155.6 Hp
Pros:
Well-thought-out kit, with all the parts needed, and then some
Has factory backing. No more possibility of warranty denials thanks to intake kit.
Can get parts for it, as well as oil and cleaning kit at dealers nationwide
Cons:
With the throttle body spacer, it can be more difficult to install than others
Same issue with cold air separation as the aEM kit (large space at the area behind the filter near the under hood fuse block)
Included hose clamp doesn't fit pCV hose at the intake tube
The kit from injen includes an interesting stepped intake tube and unique diamondplate- styled shield- presumably to keep water, mud, and dirt off the filter. The shield will protect it from debris thrown from the fan. This kit lost points on the install because it didn't include a pCV hose (which means we had to drive to get one), and because it did not include a block-off plug where that air sensor goes in the '05 and '06 Jeeps. We had to steal a block-off from another kit for the dyno pulls.
Msrp: $360.00
Install 1-10: 7
Filtering Element: Cotton Gauze
Average Peak Torque: 197.4 Lb-Ft
Average Peak Horsepower:152.4 Hp
Pros:
Unique debris shield for filter
Nice silicone coupler at throttle body
Unique stepped intake tube design
Cons:
No pCV hose provided, but easy to find
Shield won't be enough for deep water and mud, where the fan throws a lot of stuff. Good for light debris though
No block-off plug for '04 and earlier models-not so easy to find.
The k&N Fipk could very well be the grandaddy of all these kits. We remember the introduction of the Fipk years ago, and to the untrained eye, it looks as though not much has changed over the years. it includes a CarB exemption sticker, quality plastic intake tube, and highflow k&N conical filter.
Msrp: $385.84
Install 1-10: 9
Filtering Element: Cotton Gauze
Average Peak Torque:198.5 Lb-Ft
Average Peak Horsepower:153.8 Hp
Pros:
Million mile warranty on filter
50 state legal
Smooth intake tube curvature
Cons:
Cold air housing interferes slightly with aC line-trimming of housing required
Cold-air housing doesn't completely separate filter from hot under hood air
Bracket at radiator hard to get tools on.