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post #1 of 28 (permalink) Old 04-04-2017, 11:41 PM Thread Starter
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Performance upgrades

I have a 2014 Trailhawk V.6 and I have only just started adding parts. So far I have only added the K&N cold air intake, and I would really appreciate advice to increase power (only partially for offroading).

I apologize if this post is in the wrong section--
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post #2 of 28 (permalink) Old 04-05-2017, 01:12 AM
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There is a plenum upgrade as well. As far as tuners, I've never seen a valid probable claim towards them. Headers aren't possible, last I checked however you can do an exhaust upgrade as well but it may screw with ground clearance.


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post #3 of 28 (permalink) Old 04-05-2017, 08:17 AM
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Len, Actually an exhaust (Magnaflow in my case) will save your room and weight, the only thing you have to watch out for is that you may lose a little bit of departure angle depending on how you setup the exhaust tips. Plus it picked me up about 5-7hp according the Torque app (multiple runs before and after) and sounds much better. I am interested in the plenum upgrade you mentioned, is this a manifold plenum or just a replacement for the stock intake tube (something already replaced with other intake kits)?

2014 Trailhawk 3.2 AFE, Magnaflow, XD HID/LED Fog, Aussie Lift w/255/70/17
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post #4 of 28 (permalink) Old 04-05-2017, 11:11 AM
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Originally Posted by Zoramac View Post
Len, Actually an exhaust (Magnaflow in my case) will save your room and weight, the only thing you have to watch out for is that you may lose a little bit of departure angle depending on how you setup the exhaust tips. Plus it picked me up about 5-7hp according the Torque app (multiple runs before and after) and sounds much better. I am interested in the plenum upgrade you mentioned, is this a manifold plenum or just a replacement for the stock intake tube (something already replaced with other intake kits)?


I've seen some aftermarket exhausts drop lower between the rear lower control arms and I knew about the exhaust tips lol. Since the OP has a KN kit he didn't get the intake plenum that something like AFE comes with. It's about 100$ or so but they do make one, I've seen it. I'm not apart of the Facebook group that posted one anymore so I can't say where it is.


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post #5 of 28 (permalink) Old 04-05-2017, 11:37 AM
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I have the aFe CAI, so what are you talking about: intake plenum? My kit does replace the silencer air box, if this is what you are referring to. After installing this kit, the throttle response is awesome. I actually spun the front tires yesterday, taking off from a stop light on a slick road.

2016 Cherokee Trailhawk: Mango Tango Pearl Coat over Black.
OPTIONS: Every Available Factory Option/Package Except Remote CD Player.
MODS: Whispbars; Mopar Cargo Cover; Mopar Cargo Mat; Mopar/KICKER 9 Speaker Upgrade; KICKER Sub and Amp; Ziebart Undercoating; aFe CAI.
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post #6 of 28 (permalink) Old 04-05-2017, 11:40 AM
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Originally Posted by dhh3 View Post
I have the aFe CAI, so what are you talking about: intake plenum? My kit does replace the silencer air box, if this is what you are referring to.


My understanding is that the KN doesn't go all the way to the intake and some factory parts are reused. The AFE one doesn't and has a smooth tubing system all the way to the intake. I could be calling it something wrong. It's a piece of tube the KN kit doesn't come with but the AFE does.


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post #7 of 28 (permalink) Old 04-05-2017, 11:56 AM
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Quote:
Originally Posted by Len1304 View Post
My understanding is that the KN doesn't go all the way to the intake and some factory parts are reused. The AFE one doesn't and has a smooth tubing system all the way to the intake. I could be calling it something wrong. It's a piece of tube the KN kit doesn't come with but the AFE does.


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The tubing on my kit goes all the way to the throttle body. The stock intake has a box on it to silence air going to the throttle body. This box may be the plenum you are referring to. But, this box also interrupts the air flow. The results of adding the aFe kit are a cleaner flow, but the noise from the air rushing to the throttle body is loud. I sometimes forget that I have it, and I'm thinking that the sound (I can hear it over the radio!) is coming from the car next to me, as I take off from a stop. The aFe kit uses the bottom of the stock air filter box and the air dam is bolted to this. The filter then sits inside the air dam, allowing only cold air to the filter. Using the bottom of the stock filter box makes it basically a Ram Air to the filter. I can feel the power gain, but I have no way to measure it. I have not witnessed any mpg change since I installed it last month.

2016 Cherokee Trailhawk: Mango Tango Pearl Coat over Black.
OPTIONS: Every Available Factory Option/Package Except Remote CD Player.
MODS: Whispbars; Mopar Cargo Cover; Mopar Cargo Mat; Mopar/KICKER 9 Speaker Upgrade; KICKER Sub and Amp; Ziebart Undercoating; aFe CAI.
FUTURE MODS: Remote CD Player; Mopar Rock Rails; Rear Fog Lights.
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post #8 of 28 (permalink) Old 04-05-2017, 12:18 PM
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Originally Posted by Zoramac View Post
Len, Actually an exhaust (Magnaflow in my case) will save your room and weight, the only thing you have to watch out for is that you may lose a little bit of departure angle depending on how you setup the exhaust tips. Plus it picked me up about 5-7hp according the Torque app (multiple runs before and after) and sounds much better. I am interested in the plenum upgrade you mentioned, is this a manifold plenum or just a replacement for the stock intake tube (something already replaced with other intake kits)?
Which Magnaflow exhaust are you running?

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post #9 of 28 (permalink) Old 04-05-2017, 12:36 PM
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Originally Posted by Bhopkins21 View Post
Which Magnaflow exhaust are you running?
This one: magnaflow.com/products?partNumber=15327

It's sad that between this and the AFE I already have every performance part made for the vehicle installed.
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2014 Trailhawk 3.2 AFE, Magnaflow, XD HID/LED Fog, Aussie Lift w/255/70/17
2005 GTO 6.0 Not Stock
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post #10 of 28 (permalink) Old 04-05-2017, 02:28 PM
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Not trying to hijack the post but I have a 2016 jeep Cherokee limited with a 4 cylinder this is in serous need of a HP upgrade. I can not find a air box upgrade for the 4 cylinder has anyone found and installed one. Any info would be appreciated.
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