Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Engine Performance/Intakes/Exhausts

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 05-28-2014, 04:48 PM
Member
 
Join Date: Apr 2014
Posts: 55
Thanks: 1
Thanked 2 Times in 2 Posts
Rep Power: 202
imissedtheapex is on a distinguished road
Do CAI's actually make power on the Hemi?

Hi folks, new to the GC but not new to modding! I just purchased a '14 V8 Overland and I absolutely love it. Curious if anyone has REAL WORLD proof that the intakes add power. I have searched and can't seem to find anything on the forum, other than added MPG benefits and butt dyno impressions. Seems like most folks are going the aFe route vs Mopar. But I can't find a dyno sheet or any info that shows that these things actually improve HP and TQ.

Can anyone here shed some light for me? I'm coming from a BMW M car where the intakes didn't add a bit of power. My first modded car was a Nissan and it picked up 12 or so HP from a CAI so I know it depends on the car.

Thanks for your help!
__________________

__________________
Reply With Quote
  #2  
Old 05-29-2014, 12:28 PM
Member
 
Join Date: Apr 2014
Posts: 55
Thanks: 1
Thanked 2 Times in 2 Posts
Rep Power: 202
imissedtheapex is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

so what you're saying is that I need to dyno some of these intakes then lol
__________________

__________________
Reply With Quote
  #3  
Old 05-29-2014, 02:06 PM
Member
My Jeep: 2014 3.2L KJ
 
Join Date: Apr 2014
Location: Middle GA
Posts: 15
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 170
CarlsDad is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

I had a R/T Charger, 5.7 Hemi, that I put a Volant CAI on. Can't say I noticed any significant improvement in any area, power or MPG. It did have a slightly more deep sound at WOT, but that was about it.
__________________
Reply With Quote
  #4  
Old 05-30-2014, 12:04 AM
Member
 
Join Date: Apr 2014
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 170
Pleasedontfallapart is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

2013 5.7L V8 GC TrailHawk and my Dyno run.
__________________
Reply With Quote
  #5  
Old 05-30-2014, 03:27 PM
Member
 
Join Date: Apr 2014
Posts: 55
Thanks: 1
Thanked 2 Times in 2 Posts
Rep Power: 202
imissedtheapex is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

thanks for this
__________________
Reply With Quote
  #6  
Old 06-01-2014, 03:45 PM
Member
My Jeep: 2013 5.7L WK2
 
Join Date: Feb 2013
Location: MA
Posts: 154
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 745
JoeD is a glorious beacon of light
Re: Do CAI's actually make power on the Hemi?

That link had a good thread that went downhill quickly. My take is you won't get much out of an intake system. I know the dyno in that thread showed 50 rw ftlbs increase, but I don't buy it. Dyno runs are not 100 percent and the operator can change the outcome.
Running it down a track is going to show you a more accurate increase of power.
__________________
2013 WK2 Limited 5.7
Reply With Quote
  #7  
Old 06-01-2014, 08:25 PM
WK2 Rover's Avatar
Premium Member
My Jeep: 2011 5.7L WK2
 
Join Date: Sep 2010
Location: San Francisco Bay Area
Posts: 251
Thanks: 0
Thanked 7 Times in 5 Posts
Rep Power: 1716
WK2 Rover is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

K&N provides horsepower and torque numbers for their CAI.

Mopar does not provide numbers, but the throttle response is definitely better.
__________________
JEEP 3: 2011 Grand Cherokee Overland 4x4, Hemi V-8 with MDS, Multi-speed Automatic with ERS, Quadra-Drive II with Rear ELSD, Off-Road Adventure Group II, Selec-Terrain, Quadra-Lift, Towing Group IV, Advanced Warning & Adaptive Cruise Control, Bright Silver Exterior with Beige Leather Interior
MODS: All-Terrain tires, Passenger-side "Trail Rated" Badge, "5.7L" and "Hemi" Badges, "70th Anniversary" Badge, Mopar Cold Air Intake, Custom Engine Cover, Chrome Fog Light Bezels, Bright Pedals, Illuminated Door Sills, WeatherTech in front / back / cargo / license plate frame, Mopar Roof Rack, Thule Ski Rack, Thule MOAB Cargo Basket
JEEP 4: 2014 Cherokee Trailhawk 4x4, 3.2 liter V-6, 9-speed Automatic with ERS, Active-Drive II with Rear ELSD, Technology Group, Comfort Group, Cold Weather Group, Granite Exterior with Brown Interior
Reply With Quote
  #8  
Old 06-01-2014, 10:02 PM
vzwman's Avatar
Premium Member
 
Join Date: May 2012
Posts: 38
Thanks: 3
Thanked 4 Times in 3 Posts
Rep Power: 1094
vzwman has a reputation beyond reputevzwman has a reputation beyond reputevzwman has a reputation beyond reputevzwman has a reputation beyond reputevzwman has a reputation beyond reputevzwman has a reputation beyond reputevzwman has a reputation beyond reputevzwman has a reputation beyond repute
Re: Do CAI's actually make power on the Hemi?

Quote:
Originally Posted by imissedtheapex View Post
Hi folks, new to the GC but not new to modding! I just purchased a '14 V8 Overland and I absolutely love it. Curious if anyone has REAL WORLD proof that the intakes add power. I have searched and can't seem to find anything on the forum, other than added MPG benefits and butt dyno impressions. Seems like most folks are going the aFe route vs Mopar. But I can't find a dyno sheet or any info that shows that these things actually improve HP and TQ.

Can anyone here shed some light for me? I'm coming from a BMW M car where the intakes didn't add a bit of power. My first modded car was a Nissan and it picked up 12 or so HP from a CAI so I know it depends on the car.

Thanks for your help!
I also have a 2014 Jeep Grand Cherokee Overland with the 5.7L Hemi and I can say that the mods that I have done on mine have helped. I removed the OEM exhaust and installed a Magnaflow #16929 Stainless Cat-Back Performance Exhaust System. I also installed the Mopar OEM Cold Air Intake Kit. I removed the stock OEM throttle body and installed the Moe's Performance Ported Throttle Body 87MM. All that helped but Jeep has the 5.7 Hemi so locked down I went ahead and got the DCX in Tune I-1000 Tuning System. Sean at HemiFever wrote me a 93 octane program and I installed it and MAN the Hemi came alive. Best thing that was ever done when I applied this to my engine. You can reapply the stock program anytime. The unit keeps the factory stock program so if you need to take your Jeep to dealer it will have the factory program in the PCM. Have done mine several times when my Jeep was taken back to dealer. Then when I get it back home I reinstall the performance tune back into the PCM. All in all I am very happy with my mods. Jeep sounds good and runs great.
__________________
Reply With Quote
  #9  
Old 06-01-2014, 10:42 PM
Member
 
Join Date: Apr 2014
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 170
Pleasedontfallapart is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

Quote:
Originally Posted by JoeD View Post
That link had a good thread that went downhill quickly. My take is you won't get much out of an intake system. I know the dyno in that thread showed 50 rw ftlbs increase, but I don't buy it. Dyno runs are not 100 percent and the operator can change the outcome.
Running it down a track is going to show you a more accurate increase of power.
and how would running it down the track be any determination of torque numbers?...... You can calculate hp by trap speed but just wondering how you figure torque never herd of this
__________________
Reply With Quote
  #10  
Old 06-02-2014, 02:10 AM
Member
My Jeep: 2014 5.7L WK2
 
Join Date: Jul 2013
Location: AlWakRa, Qatar
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 436
AlWakRa is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

I don't know if what I did would be considered prove of gain or not. Anyway, I ran my car against a Ram 1500 before and after. Before installing Volant CAI, I stayed in front until 60 mph and then the Ram pulled me and pass me at around 80-85 mph. After CAI, he pulls me a little slower and as soon as he pass me, he hits the speed limiter which is 105 mph.

Also, from my day to day driving, I feel the car lighter on low to mid rpms after I installed CAI. So, I would say there's some gain at least in TQ.
__________________
14 Jeep Grand Cherokee Summit - Bright White - Grand Canyon - ZF8 - Volant CAI
10 Nissan 370Z - Sport Touring - PW - PL - 6MT - Stock
07 Infiniti G35 Sedan - LP - BL - 5AT - Stock (up for sale)
Reply With Quote
  #11  
Old 06-02-2014, 08:28 PM
Member
My Jeep: 2013 5.7L WK2
 
Join Date: Feb 2013
Location: MA
Posts: 154
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 745
JoeD is a glorious beacon of light
Re: Do CAI's actually make power on the Hemi?

Quote:
Originally Posted by Pleasedontfallapart View Post
and how would running it down the track be any determination of torque numbers?...... You can calculate hp by trap speed but just wondering how you figure torque never herd of this
I did say power, should have said HP.
__________________
2013 WK2 Limited 5.7
Reply With Quote
  #12  
Old 06-24-2014, 11:02 AM
ssgunner's Avatar
Member
My Jeep: 2014 5.7L WK2
 
Join Date: Jun 2014
Posts: 157
Thanks: 10
Thanked 2 Times in 2 Posts
Rep Power: 253
ssgunner is on a distinguished road
Re: Do CAI's actually make power on the Hemi?

Got the same model. Just picked her up 4 days ago. Looking into these. Don't know where to start though.
__________________

__________________
Reply With Quote
Reply

Tags
hemi

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to make a 5.7 Hemi sound like an actual 5.7 Hemi bumpinjeep Engine Performance/Intakes/Exhausts 70 01-10-2014 02:31 AM
how to make the "6 speed" transmission in 2012 Hemi actually work as a 6 speed? mikoz Suspension/Driveline/Brakes/Wheels/Tires 8 05-29-2013 07:04 PM
How to make Power Folding mirrors... BumChuck Tech Tips/DIY/How To 3 09-29-2012 02:33 PM
The Things We Make, Make Us mangoe Grand Cherokee - WK2 - 7 08-05-2010 11:16 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 11:34 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community