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
 
  #49  
Old 08-10-2013, 06:02 PM
tomk's Avatar
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: Jan 2012
Location: Amherst, MA
Posts: 333
Thanks: 7
Thanked 9 Times in 8 Posts
Rep Power: 1838
tomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond repute
Re: 2014 V8 is weak?

Another thing to remember about demo rides is that the engine is restricted for the first ~300 miles..

...tom
__________________

__________________
2007 WK Limited 5.7L
2014 WK2 Overland 5.7L !!
And a few past Durangos
Reply With Quote
  #50  
Old 08-10-2013, 06:05 PM
seeingwhite's Avatar
How long until the reckoning?
My Jeep: 2002 3.7L KJ
 
Join Date: Jul 2013
Location: FFH
Posts: 378
Thanks: 68
Thanked 41 Times in 26 Posts
Rep Power: 2096
seeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond repute
Re: 2014 V8 is weak?

Quote:
Originally Posted by tomk View Post
Another thing to remember about demo rides is that the engine is restricted for the first ~300 miles..

...tom
Is that limited via the jeeps computer or just normal break in power gains?
__________________

__________________
Reply With Quote
  #51  
Old 08-10-2013, 06:12 PM
tomk's Avatar
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: Jan 2012
Location: Amherst, MA
Posts: 333
Thanks: 7
Thanked 9 Times in 8 Posts
Rep Power: 1838
tomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond repute
Re: 2014 V8 is weak?

Quote:
Originally Posted by seeingwhite View Post
Is that limited via the jeeps computer or just normal break in power gains?
By the computer.
__________________
2007 WK Limited 5.7L
2014 WK2 Overland 5.7L !!
And a few past Durangos
Reply With Quote
  #52  
Old 08-10-2013, 06:13 PM
Willx's Avatar
Moderator - MOTS jr.


My Jeep: 2014 3.0L WK2
 
Join Date: May 2013
Posts: 4,875
Thanks: 527
Thanked 848 Times in 467 Posts
Rep Power: 1926991
Willx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond repute
Garage
Re: 2014 V8 is weak?

Quote:
Originally Posted by tomk View Post
Another thing to remember about demo rides is that the engine is restricted for the first ~300 miles..

...tom
huh? since when?
__________________
Reply With Quote
  #53  
Old 08-10-2013, 06:16 PM
seeingwhite's Avatar
How long until the reckoning?
My Jeep: 2002 3.7L KJ
 
Join Date: Jul 2013
Location: FFH
Posts: 378
Thanks: 68
Thanked 41 Times in 26 Posts
Rep Power: 2096
seeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond reputeseeingwhite has a reputation beyond repute
Re: 2014 V8 is weak?

Quote:
Originally Posted by tomk View Post
By the computer.
Good to know, thanks! I had no idea. Do you know any specifics like hp reduction, rev limiting etc?
__________________
Reply With Quote
  #54  
Old 08-10-2013, 06:19 PM
bill_de's Avatar
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: Sep 2012
Posts: 5,880
Thanks: 297
Thanked 300 Times in 265 Posts
Rep Power: 1801306
bill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond reputebill_de has a reputation beyond repute
Re: 2014 V8 is weak?

Quote:
Originally Posted by seeingwhite View Post


Good to know, thanks! I had no idea. Do you know any specifics like hp reduction, rev limiting etc?
First I've ever heard that. I'd like more specifics also.


---
__________________
If you need a shoulder to cry on ...

... pull over to the side of the road!

Reply With Quote
  #55  
Old 08-10-2013, 06:19 PM
Willx's Avatar
Moderator - MOTS jr.


My Jeep: 2014 3.0L WK2
 
Join Date: May 2013
Posts: 4,875
Thanks: 527
Thanked 848 Times in 467 Posts
Rep Power: 1926991
Willx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond repute
Garage
Re: 2014 V8 is weak?

Quote:
Originally Posted by tomk View Post
By the computer.
Who told you this?
__________________
Reply With Quote
  #56  
Old 08-10-2013, 06:26 PM
weck's Avatar
Member
 
Join Date: Nov 2012
Location: Wisco
Posts: 743
Thanks: 14
Thanked 24 Times in 24 Posts
Rep Power: 3598
weck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond reputeweck has a reputation beyond repute
Re: 2014 V8 is weak?

My dealer claimed that the hemi specifically is run as the vehicle goes down the line, and the oil is changed before it leaves the factory. Supposedly left over requirement from the Daimler days.

Seemed a little far fetched to me but maybe...
__________________
The bling wagon: 2014 Grand Cherokee Limited, 5.7, RA4, Lux2, OA2 sporting LTX A/Ts
The mileage slave: 2010 Jetta Sportwagen TDI
Reply With Quote
  #57  
Old 08-10-2013, 06:27 PM
tomk's Avatar
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: Jan 2012
Location: Amherst, MA
Posts: 333
Thanks: 7
Thanked 9 Times in 8 Posts
Rep Power: 1838
tomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond repute
Re: 2014 V8 is weak?

I went thru this when I bought my '07 WK 5.7L.

it was a VERY different beast after the first 300 miles.

I don't know for sure if that is still true for the WK2; I did not notice as much of a change on the WK2, but then again I was switching between the '07 and the '14 so I may have too many variables.

...tom
__________________
2007 WK Limited 5.7L
2014 WK2 Overland 5.7L !!
And a few past Durangos
Reply With Quote
  #58  
Old 08-10-2013, 06:28 PM
tomk's Avatar
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: Jan 2012
Location: Amherst, MA
Posts: 333
Thanks: 7
Thanked 9 Times in 8 Posts
Rep Power: 1838
tomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond repute
Re: 2014 V8 is weak?

Quote:
Originally Posted by weck View Post
My dealer claimed that the hemi specifically is run as the vehicle goes down the line, and the oil is changed before it leaves the factory. Supposedly left over requirement from the Daimler days.

Seemed a little far fetched to me but maybe...
pretty sure that's not true.
__________________
2007 WK Limited 5.7L
2014 WK2 Overland 5.7L !!
And a few past Durangos
Reply With Quote
  #59  
Old 08-10-2013, 06:36 PM
Willx's Avatar
Moderator - MOTS jr.


My Jeep: 2014 3.0L WK2
 
Join Date: May 2013
Posts: 4,875
Thanks: 527
Thanked 848 Times in 467 Posts
Rep Power: 1926991
Willx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond reputeWillx has a reputation beyond repute
Garage
Re: 2014 V8 is weak?

I honestly don't ever recall this, not in 07 or anytime at least the last couple of decades?

I will agree the Tahoe Yukon is a dog in comparision to the HEMI in either the old or moreso the new Grand Cherokee. I had one, and yes it was underpowered with the 5.3
__________________
Reply With Quote
  #60  
Old 08-10-2013, 07:17 PM
tomk's Avatar
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: Jan 2012
Location: Amherst, MA
Posts: 333
Thanks: 7
Thanked 9 Times in 8 Posts
Rep Power: 1838
tomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond reputetomk has a reputation beyond repute
Re: 2014 V8 is weak?

Quote:
Originally Posted by Willx View Post
I honestly don't ever recall this, not in 07 or anytime at least the last couple of decades?
You may have better info than I have (wouldn't be hard), IIRC you are somewhat connected..

But as far as I can tell at least as far back as my '95 Intrepid 3.5L the PCM had a break-in mode for the first N miles.. to the point that even the idle RPM was different.

...tom
__________________

__________________
2007 WK Limited 5.7L
2014 WK2 Overland 5.7L !!
And a few past Durangos
Reply With Quote
Reply

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
2014 A/C Kind of Weak BobsWK2 Trouble Shooting/Problems/Service 22 07-10-2013 07:53 AM
Weak A/C? kaflyboy Trouble Shooting/Problems/Service 17 06-05-2013 01:38 PM
weak airflow from heater and A/C chuck33 Troubleshooting/Problems 15 05-14-2013 04:17 PM
VisualGarage FM reception weak? J13ntv Grand Cherokee - WK2 - 4 03-30-2011 10:28 PM
Weak Power Steering MJohnson92 Troubleshooting/Problems 2 03-22-2011 02:34 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 02:49 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