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  #37  
Old 12-22-2016, 07:34 PM
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Re: Dyno Testing and results on WK 5.7L

Ported 87mm throttle body dyno pulls. We made a total of 5 dyno pulls but did not record the last two runs because the results were more or less the same.

Dyno run 1



Dyno run 2



Dyno run 3


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  #38  
Old 12-22-2016, 08:05 PM
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Re: Dyno Testing and results on WK 5.7L

Second time pitting these two against one another but the K&N CAI does in fact pickup power on my 2014 JGC 5.7L. No tuning is needed to take advantage of the increased airflow, just bolt it on and go.




K&N CAI picked up 12-13awhp and 15awtq...not bad for a CAI kit



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  #39  
Old 12-23-2016, 09:15 AM
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Re: Dyno Testing and results on WK 5.7L

I'm quite surprised at the CAI gains. I was not expecting that much.
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  #40  
Old 12-23-2016, 10:46 AM
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Re: Dyno Testing and results on WK 5.7L

Love my K&N - glad to see it picked up a few HP!
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  #41  
Old 12-23-2016, 07:24 PM
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Re: Dyno Testing and results on WK 5.7L

I wonder if having the hood open is giving you false increases with the cold air intake.
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  #42  
Old 12-23-2016, 08:36 PM
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Re: Dyno Testing and results on WK 5.7L

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Originally Posted by JoeD View Post
I wonder if having the hood open is giving you false increases with the cold air intake.
Joe,
The dyno run with the stk. air intake system was with the hood open and we did the same for the K&N CAI, seemed like a fair apples to apples comparison. If you want a closed hood test, a run down the quarter mile dragstrip can be done but 10-12awhp and 15awtq is not going to show a huge difference in ETs.

The stk. air filter and resonator (long black plastic piece) are restrictive. The resonator with all the obstacles protruding into the air path is creating a lot of turbulence to cancel out noise. But the net effect is less velocity and air flow going into the engine. Not sure why people can't understand that?

Personally, I thought there would be more concerns over the throttle body.

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  #43  
Old 12-31-2016, 11:57 AM
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Re: Dyno Testing and results on WK 5.7L

Is the throttle body you installed a ported stock TB or is this one from modern muscle performance?

I have a local machine shop that I trust and was wondering if it's worth it to jut have my own stock one ported or pay $350 for the MMP one.

Also, Overkill Motorsports in Canada used to sell ported intake manifolds too but I looked again recently and they no longer have those either.


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  #44  
Old 12-31-2016, 04:19 PM
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Re: Dyno Testing and results on WK 5.7L

Quote:
Originally Posted by brandondmorris View Post
Is the throttle body you installed a ported stock TB or is this one from modern muscle performance?

I have a local machine shop that I trust and was wondering if it's worth it to jut have my own stock one ported or pay $350 for the MMP one.

Also, Overkill Motorsports in Canada used to sell ported intake manifolds too but I looked again recently and they no longer have those either.
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It's a ported stk. throttle body from Moe's Performance: Moe's Performance 87MM Ported Throttle Body 2013-2016 Jeep Grand Cherokee 5.7L Hemi

To be fair dyno results aren't everything and I need to test this thing at the drag strip. Granted the HP & TQ gains were not there at least for my vehicle but I'll have to wait a few months until the track re-opens in April 2017. As far as porting your stock throttle body, if you're expectations are low in terms of HP & TQ, your cost is minimal and down time is minimal then that's a decision you have to make.

In my opinion, the 5.7L engine does respond to minor modifications but the added performance isn't going to earth shattering when you replace the following (Stk. air box setup, computer tunes, throttle body, intakes and cat-back exhaust).

I hope this helps
Michael Plummer
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  #45  
Old 01-11-2017, 08:53 AM
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Re: Dyno Testing and results on WK 5.7L

Quote:
Originally Posted by Michael Plummer View Post
It's a ported stk. throttle body from Moe's Performance: Moe's Performance 87MM Ported Throttle Body 2013-2016 Jeep Grand Cherokee 5.7L Hemi

To be fair dyno results aren't everything and I need to test this thing at the drag strip. Granted the HP & TQ gains were not there at least for my vehicle but I'll have to wait a few months until the track re-opens in April 2017. As far as porting your stock throttle body, if you're expectations are low in terms of HP & TQ, your cost is minimal and down time is minimal then that's a decision you have to make.

In my opinion, the 5.7L engine does respond to minor modifications but the added performance isn't going to earth shattering when you replace the following (Stk. air box setup, computer tunes, throttle body, intakes and cat-back exhaust).

I hope this helps
Michael Plummer

So, after all of the modifications you made and the dyno testing you did, does your signature reflect the most current RWHP/TQ numbers after the mods? Also, i'm a bit confused - in one post, your dyno sheet showed a loss of hp/tq if I remember correctly after some mods. Is that the case, or was that some sort of bug that got worked out later? Overall, you did gain both hp/tq considerably, correct?
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  #46  
Old 01-11-2017, 09:12 PM
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Re: Dyno Testing and results on WK 5.7L

Great questions, lets take them one at a time.

Q) So, after all of the modifications you made and the dyno testing you did, does your signature reflect the most current RWHP/TQ numbers after the mods?
A) No they do NOT reflect the most current dyno session. Those numbers are the best NON-CORRECTED numbers for that day (March 2016). That's' what the vehicle made on that day (March 2016) at that particular time. The corrected numbers for comparison sake are 295.6AWHP and 327.3AWTQ CORRECTED vs. 304AWHP & 337AWTQ UNCORRECTED.


Q) Also, i'm a bit confused - in one post, your dyno sheet showed a loss of hp/tq if I remember correctly after some mods. Is that the case, or was that some sort of bug that got worked out later?
A) At the last dyno session in December 2016, the throttle Body basically gave us no noticeable increase in HP or TQ. The gains were very small or negative in terms of AWHP and AWTQ depending on which baseline you used. It's fair to say I saw no increase in HP or TQ with the Throttle Body. The bug we had was with our DiabloSport handheld not being able to upload a tune from HemiFever or Diablo. So all the dyno runs in December were on the stk. processor tune.


Q) Overall, you did gain both hp/tq considerably, correct?
A) We gain 12-13 awhp and 15 awtq CORRECTED with the K&N CAI over the stk air box. And the first time out (March 2016) we gained 10 awhp and 9 awtq. So the CAI works well on the 5.7L engine despite what some people say.

The tunes from HemiFever and Diablo should pickup another 10awhp and 10awtq based on information from my first dyno session in March 2016. The DiabloSport handheld is working again and I'm planning to go back to the dyno to test the tunes from HemiFever against DiabloSport soon.

I hope this helps
Michael Plummer
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  #47  
Old 01-12-2017, 01:02 AM
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Re: Dyno Testing and results on WK 5.7L

So of all the mods you have tested you recommend the CAI the most? Beside the DiabloSport/Hemifever
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  #48  
Old 01-12-2017, 05:28 AM
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Re: Dyno Testing and results on WK 5.7L

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Originally Posted by Sweed View Post
So of all the mods you have tested you recommend the CAI the most? Beside the DiabloSport/Hemifever
In my opinion based on dyno information this is what I saw.

1) CAI: A properly designed CAI on the 5.7L engine will pickup power with no tuning required and you will hear more of the air rushing in due to no obstacles in the air path that causes turbulence and cancels out noise. Is it worth the money, that's for people to decide. I like my K&N CAI and see no need to get rid of it.

2) Corsa Cat-back: Some people has seen increases in HP & TQ but I saw no HP or TQ increase. On Corsa's web site they don't mention any HP gains but they do mention the system out flows the OEM version by some percentage. If you need the extra flow, then you should see a power increase, if you don't then you won't. In my opinion, this is a sound issue. Is it worth the $1500+? That's for the owner to decide. I decided to sell my Corsa Cat-back after 118 miles.

3) DiabloSport Handheld: I like the handheld unit because of the datalogging it can do. Plus being able to clear DTC is a plus and I like the other features it has.

4) Diablo & HemiFever tunes: With a stk. engine and the little mods I have you should see HP and TQ increases comparable to the CAI. Is it worth it? That's for the owner to decide. I like my Diablo tunes and still use them.

5) Ported throttle body: I expected more because of what it does to airflow but it didn't materialize on the dyno. Is it possible for the vehicle to go faster and not see an increase in power? Yes. So more testing will be done once my track opens up in the Spring.

6) Lower thermostat: LOL

I hope this helps
Michael Plummer
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