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  #73  
Old 02-06-2015, 06:46 AM
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Re: K&N CAI installed - love the deep note on throttle

[QUOTE=JGCO_77;1145108]Question - anyone notice a small delay in throttle response after install? Just out running errands and definitely feel a bit of hesitation on full throttle - no bueno

Hi there,
I dont have that issue, dont know about the rest, after reading your post yesterday I tried it this morning leaving the house, full throttle and the Jeep jumps !...and the sound....that is really something else, before installing the kit it used to be like a stealth jeep...you couldnt hear a thing...now its still silent but when the RPMS go up you hear the beautfull engine "asking for more"....

Regards and have a great weekend

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  #74  
Old 02-06-2015, 08:25 AM
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Re: K&N CAI installed - love the deep note on throttle

[QUOTE=Victor1960;1145479]
Quote:
Originally Posted by JGCO_77 View Post
Question - anyone notice a small delay in throttle response after install? Just out running errands and definitely feel a bit of hesitation on full throttle - no bueno

Hi there,
I dont have that issue, dont know about the rest, after reading your post yesterday I tried it this morning leaving the house, full throttle and the Jeep jumps !...and the sound....that is really something else, before installing the kit it used to be like a stealth jeep...you couldnt hear a thing...now its still silent but when the RPMS go up you hear the beautfull engine "asking for more"....

Regards and have a great weekend

Thanks for the test! It seems to be better today, so maybe the comp just had to adjust. It seems to be having the exact opposite as I had hoped as now I want my 5.7 even worse! Argh


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  #75  
Old 02-17-2015, 02:01 PM
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Re: K&N CAI installed - love the deep note on throttle

Hi All
I have an Ecodiesel Summit and have been contemplating getting a CAI and am looking at the AFE one...landed here while doing some general research about how the CAI's perform on the Jeeps as this is my first jeep.

One thing that I have found while researching for my previous vehicles is that the design of the intake system and cooresponding results can be somewhat deceiving. Here is what I mean - and I know there are differences in dyno's, temps, etc, etc. that affect the results -

When you look at the dyno results that KN posts on their website for their 5.7l intake (http://www.knfilters.com/dynocharts/63-1563_dyno.pdf), they cut the graph off below 3000rpm or so but you can you can see on the curves that the stock (blue) HP and Torque are actually better with the stock system than the KN system (red) up to about 3000 rpm's where the KN then takes over, you can see just enough of the curves to see them flip over each other before they cut off the rpm range on the x/horizontal axis. Think about where your engine is in the rpm range for the majority of the time you use it. On almost every other car that I have tried the KN system on, their dyno curves all mimic the same thing, the stock systems outperform the KN at lower/useable rpm ranges. And what I have read online and experienced on my own vehicles is that the loss of low end torque and HP is noticeable...lots of posts on the various make/model forums about a loss of low end umph after adding a CAI...I think the curve explains why. Not bashing KN or anything just pointing out my own interpretations. There are two 5.7l intakes, the other ones curve looks better...at least they don't flip at the lower range but again the graph is cut off so may still flip over at a lower rpm than shown on the graph. Maybe those that are not as satisfied or are experiencing some lag are using the one I linked to above and not the other one? When you look at the curves for KN 3.6l option, you can also see the flip on the lower rpm range where the stock system is better than the KN system as well (http://www.knfilters.com/dynocharts/77-1560_dyno.pdf)

I am considering the AFE intake for my ecodiesel so not quite an but for apples-apples comparisons, but here is the AFE dyno chart for the 5.7l (http://afepower.com/catalog/54-76205...76205E1600.jpg) - compare the curves to the KN curves...you will see that outside of a short bump in the lower rpm range, the torque and HP curves of the AFE are above the stock system...from what I have researched online and experienced on my own cars, the AFE doesn't have the loss of low end torque feeling....

Not affiliated at all with AFE or KN, just trying to provide some helpful things to look for when picking an intake system...

Not alot of options for the ecodiesel yet (ever?) but looks like the AFE would be a solid choice for that engine as at least there is a consistent (outside that one small rpm range which is kind of weird) improvement shown for the non-stock system especially in the low/useable rpm range...

Long winded answer but to sum it up - I wonder if those that feel a lag or no increase in performance after CAI installation is due to actually loosing low end hp/torque?
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  #76  
Old 02-17-2015, 04:27 PM
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Re: K&N CAI installed - love the deep note on throttle

Great post ljn21,

I looked at the same curves and didn't pick up on the low end only that for the majority of power band it showed an increase in performance. I've never really taken note of my average RPM but casual driving probably around 1500-2000 RPM.

But in sport mode the revs are higher usually around 3K which is where most would experience the momentary lag.

But at the end of the day it's the Hemi growl that gets the juices going

That's what the CAI does quite nicely.

Cheers
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Old 02-17-2015, 04:52 PM
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Re: K&N CAI installed - love the deep note on throttle

Quote:
Originally Posted by Gravity View Post
Great post ljn21,

I looked at the same curves and didn't pick up on the low end only that for the majority of power band it showed an increase in performance. I've never really taken note of my average RPM but casual driving probably around 1500-2000 RPM.

But in sport mode the revs are higher usually around 3K which is where most would experience the momentary lag.

But at the end of the day it's the Hemi growl that gets the juices going

That's what the CAI does quite nicely.

Cheers
The intakes do add a nice sound that is for sure! I installed a 127mm JLT intake to my Shelby and it made the supercharger whine sound incredible, with a tune and a pulley, it outright changed how the car performed as well! There is a video on youtube of someone with a Ram 1500 ecodiesel, im not crazy about the whistle sound of the turbo...sounds annoying on the video, was researching other options than the AFE (none for the diesel) and seeing if in general the jeep responds to them or not. I ordered a Bluespark tuning box so I am hoping the two in tandem give a nice increase in performance and mileage! Cheers!
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Old 02-18-2015, 12:14 PM
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K&N CAI installed - love the deep note on throttle

Great response ljn21!!! I wish I would have noticed that myself before install - very impressive observation. I ended up putting on an Econoaid throttle body booster in hopes of getting a little of the low end torque back and lo & behold - it actually worked! Color me surprised and impressed. I gave it a shot for $30 bucks & about a 15 min install. Not sure if it would do anything on a stock intake, but it was just what it needed to get back a bit of that low end power. I am actually getting about 1 mpg better gas mileage too. I swear I'm not being paid for this endorsement - lol - was just shocked it really did anything!


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  #79  
Old 03-09-2015, 11:39 PM
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Re: K&N CAI installed - love the deep note on throttle

Just installed my K&N intake on my 5.7. Love the throaty sound. My only complaint is the air temp sensor doesn't seem to sit super snug in the rubber grommet that came with the kit. Any one had and problems with it falling out after doing some off roading? And if so, any solutions?
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Old 03-10-2015, 08:01 AM
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Re: K&N CAI installed - love the deep note on throttle

I have the chrome pipe and had the same issue. I wrapped some Teflon tape around the sensor a few times which made the fit nice and snug. This issue is likely why some have a whistle from the intake and throw codes.


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Old 03-10-2015, 09:19 AM
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Re: K&N CAI installed - love the deep note on throttle

Quote:
Originally Posted by JGCO_77 View Post
Great response ljn21!!! I wish I would have noticed that myself before install - very impressive observation. I ended up putting on an Econoaid throttle body booster in hopes of getting a little of the low end torque back and lo & behold - it actually worked! Color me surprised and impressed. I gave it a shot for $30 bucks & about a 15 min install. Not sure if it would do anything on a stock intake, but it was just what it needed to get back a bit of that low end power. I am actually getting about 1 mpg better gas mileage too. I swear I'm not being paid for this endorsement - lol - was just shocked it really did anything!


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  #82  
Old 03-10-2015, 01:32 PM
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Re: K&N CAI installed - love the deep note on throttle

^^^^lol
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  #83  
Old 03-10-2015, 01:47 PM
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Re: K&N CAI installed - love the deep note on throttle

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How much ?...
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Old 03-10-2015, 03:12 PM
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Re: K&N CAI installed - love the deep note on throttle

Quote:
Originally Posted by ljn21 View Post
The intakes do add a nice sound that is for sure! I installed a 127mm JLT intake to my Shelby and it made the supercharger whine sound incredible, with a tune and a pulley, it outright changed how the car performed as well! There is a video on youtube of someone with a Ram 1500 ecodiesel, im not crazy about the whistle sound of the turbo...sounds annoying on the video, was researching other options than the AFE (none for the diesel) and seeing if in general the jeep responds to them or not. I ordered a Bluespark tuning box so I am hoping the two in tandem give a nice increase in performance and mileage! Cheers!

LJN21
any update on the aFe intake?
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