Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8 - Jeep Garage - Jeep Forum

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  #1  
Old 03-23-2016, 01:08 AM
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Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

advanced Flow engineering – aFe
Momentum GT
Pro 5R Stage-2 Intake System
Jeep Grand Cherokee (WK2) 11-15 V8-5.7L HEMI
Part Number: 54-76205

Manufacturer Link: http://afepower.com/shop/details_new...artno=54-76205

Manufacturer Dyno Gains: 15 HP, 24 ft-lbs

Vehicle: 2014 Jeep Grand Cherokee Limited 5.7 V8 Hemi – WK2

Intake is very complete – comes with everything you need (except for the tools, obviously). You don’t need to stop at the auto parts store for anything else. No cutting, modifying, jury rigging anything. aFe clearly did their homework when they designed their intake. Having first used their intake on my Ford Superduty 7.3L Powerstroke 14 years ago, I was sold on their fit, finish, and performance. I’m glad to see they have reinvested back into the company with solid engineers to design a system for our Jeeps.

Here is Momentum GT unpacked from the box.



To note – aFe is on top of their quality game. Each kit is inspected by a quality control person, as noted by the tag:



With the filter media – there are options. The Pro 5 S dry (white), or the Pro 5 R oiled (blue)





The engine bay, which should be a familiar sight:



The future home of the intake:




Step 1 – remove the engine cover. Just pull straight up.



Unbolt the resonator box that leads into the throttle body.



On the back of the resonator box, be sure keep the air intake temperature sender. You’ll need it later. A quarter turn and it’ll pop out.



Use a body clip tool to carefully remove the three clips surrounding the intake area of the airbox:



Once that’s free, pull the OEM airbox out. It is held in by three rubber grommets. There is a zip tie affixed to the back of the airbox you’ll need to unclip. Pull up hard.



Remove the three rubber grommets, and move them to the aFe box.



I chose to use the oiled filter – so slide it into the intake box:



Run the band clamp around the box, after you’ve inserted the filter. Then push the filter box back into OEM location:



Slide the boot onto the throttle body, with a clamp on each side of the hump:



Grab the intake air temperature sensor, and insert that, with the rubber grommet, into the back side of the intake tube:



Slide the intake tube into filter:



Slide the other end into the boot:



Plug in the PCV hose, as well as the intake air temperature sensor wiring. Note, that the tube is molded such that it clears the air conditioning line.



Last – put the engine cover back on!



And the most important part – how all the HP is made – the STICKER.



Here’s my back to back testing using the Torque Pro App:


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  #2  
Old 03-23-2016, 03:51 AM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Quote:
Originally Posted by DrSpeed View Post
Here’s my back to back testing using the Torque Pro App:

Great write-up and review. I have a few questions if you don't mind.

Q) Why did you choose the oiled blue filter over the dry white one?

Q) Not familiar with the Torque Pro app but where did the dyno figures come from?

Q) From the picture above (Torque Pro app) which set of variables go with the stock air box and the aFe Intake system?

Thanks
Michael Plummer
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Old 03-23-2016, 11:28 AM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Michael,

Here's some answers for you - and I'm glad you enjoyed the writeup!

[QUOTE=Michael Plummer;1275915]Great write-up and review. I have a few questions if you don't mind.

Quote:
Originally Posted by Michael Plummer View Post
Q) Why did you choose the oiled blue filter over the dry white one?
I've had great experience with the oiled filters in the past, and have used them in many different applications. In this scenario, I wanted to compare the differences between the two media styles, and chose the blue one first because - well, it was prettier. I'm going to switch over to the dry one at the next service interval.

Blue = high flow, for the street

White = better filtration, street and dirt

Here's more info on the different filter media available:

http://afepower.com/technology_detail.php?tech_id=5

Quote:
Originally Posted by Michael Plummer View Post
Q) Not familiar with the Torque Pro app but where did the dyno figures come from?
It's an Android paid app that's used in conjunction with the OBD2 Bluetooth dongle.

Here's the app - $5, and worth it:

https://play.google.com/store/apps/d...l.torque&hl=en

The Dongle:

http://www.amazon.com/Professional-D.../dp/B00EQ57BE8

I paid $20 for it a few years back - now it's less than $10.

Ignore the dyno numbers - that's based on vehicle weight and the acceleration rate. I did not scale the vehicle - just entered in an estimated weight of 4,600 lbs.


Quote:
Originally Posted by Michael Plummer View Post
Q) From the picture above (Torque Pro app) which set of variables go with the stock air box and the aFe Intake system?
The top number half is with the aFe, the bottom is with the OEM air box.

These numbers are with 33" tires and a 2.5" lift.
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Old 03-24-2016, 05:26 AM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Thanks for the links. I found them to be useful and I'm sure others will too. And I like how aFe has dedicated filters for their CAI, a very nice touch. I ordered a hand-held Tuner from Diablosport, so I'm going to wait to see what features are available before purchasing something else.

Thanks
Michael Plummer
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Old 04-16-2016, 10:23 AM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

That looks pretty sweet! With the filter all contained in the aFe box, how does it sound compared to the stock box? Great photos of the install!
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Old 04-17-2016, 02:33 PM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Quote:
Originally Posted by phisch View Post
That looks pretty sweet! With the filter all contained in the aFe box, how does it sound compared to the stock box? Great photos of the install!
Thanks! Hope the photos show how smooth the install went.

With regards to sound, came out about nearly the same as the OEM, maybe 10% louder during WOT. The intake eliminated the intake resonator box, and provided a straight shot from the throttle body to the filter.

I also liked the way it used the factory intake locations, pulling in air from outside the engine bay.

If you are looking for something louder, the Magnum Force Stage II has an open filter element, which will likely allow you to hear more of the induction sound:

Cold Air Intake System Stage-2 Magnum FORCE Intake System; Stage 2 Pro 5R; Jeep Grand Cherokee; 11-15 V8-5.7L HEMI 54-12242 - aFe Power

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Old 04-19-2016, 07:09 AM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

I guess that system as shown at last photo, with open design, might be better as it utilizes stock air duct to deliver air under the filter, but not directly on filter. Coming air could bring dust, sand, mud water and snow directly to the filter.


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Old 04-19-2016, 10:34 AM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Quote:
Originally Posted by AlexIVK View Post
I guess that system as shown at last photo, with open design, might be better as it utilizes stock air duct to deliver air under the filter, but not directly on filter. Coming air could bring dust, sand, mud water and snow directly to the filter.


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The Magnum flows better, as it's an open element design.

With regards to incoming air, it would be rather difficult to get mud, water, and snow into the airbox short of burying the vehicle.

At that point, you've probably ruined the interior.
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Old 04-19-2016, 12:39 PM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Just check the stock filter box and ask yourself why there are no strait way of air into the box and what for they did the drain hole at the bottom.
Your never drove, even by chance into puddles of rain water ?
And, of course, if you are located in south states you shouldn't care about driving home when sudden snowstorm happens. Never saw air filters plumbed with the snow ?
I am not negative to the first design but some times some whether and road conditions could happen, you know..


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Old 04-19-2016, 01:59 PM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

I just noticed that there's no weep hole like in the factory location. That's a good point.

With regards to an open vs closed intake - there are obviously pros and cons. The OEMs can only design to a 95% of the driving situations, because it will get cost prohibitive.

Based on your personal needs, desires, road conditions, etc, you get to decide what aftermarket part, in this case, an intake, best suits your needs.

This review is to simply provide additional photos, an editorial, and some objective measurements of the Momentum intake.

I'm glad it make it easier for you, based on your needs, to steer your decision towards the Magnum intake - which should make your Jeep sound pretty burly!
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Old 05-09-2016, 05:22 PM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Looking at getting your intake, are you still happy with it? Just curious if you had increase in mpg? My truck is stock, just looking for a little more pep and maybe gaining 1-2 mpg's. I think it's the best looking intake on the market.
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Old 06-27-2016, 12:49 AM
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Re: Installation and Review: aFe Momentum GT Intake - WK2 Grand Cherokee 5.7 L V8

Great wright up and photos, thanks for that!

How much difference in performance do you "feel" and have you done anything else to you engine?
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