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-   -   K&N Panel Filter on CRD (http://www.jeepgarage.org/f79/k-and-n-panel-filter-on-crd-38107.html)

roddaz 02-29-2012 12:03 PM

K&N Panel Filter on CRD
 
I have been running my 2007 Grand Cherokee CRD with a K&N Panel Filter for approx 4 weeks. And have noticed the fuel consumption has suffered noticeably.General running about down from 25-22, Motorway 65mph ish down from 32-28 mpg on dash readout .
No difference in induction noise so no reason to give it the Loud pedal!
Just a little suprised at the results I am getting.
Had a similar problem on old TD XJ Jeep with K&N and was told it was due to mass airflow meter increasing fuel because of increased airflow does this sound correct?

diesel2fast4u 02-29-2012 12:12 PM

Re: K&N Panel Filter on CRD
 
Quote:

Originally Posted by roddaz (Post 583717)
I have been running my 2007 Grand Cherokee CRD with a K&N Panel Filter for approx 4 weeks. And have noticed the fuel consumption has suffered noticeably.General running about down from 25-22, Motorway 65mph ish down from 32-28 mpg on dash readout .
No difference in induction noise so no reason to give it the Loud pedal!
Just a little suprised at the results I am getting.
Had a similar problem on old TD XJ Jeep with K&N and was told it was due to mass airflow meter increasing fuel because of increased airflow does this sound correct?

No the MAF is only used for DPF & EGR control, unplug it, your check engine light will light but no limp mode

TurboDiesel 02-29-2012 08:30 PM

Re: K&N Panel Filter on CRD
 
i wish i got 32-38 mpg
hell i wish i got 22-25 lol

airmail96 03-03-2012 08:16 PM

Re: K&N Panel Filter on CRD
 
I get 21 in the city, and about 22-23 on the highway.

TurboDiesel 03-03-2012 08:17 PM

Re: K&N Panel Filter on CRD
 
i get like 18ish, but all i ever do is city driving
and im lifted, bigger tires, no air dam

airmail96 03-03-2012 08:39 PM

Re: K&N Panel Filter on CRD
 
Ahh that would do it haha, but that still isn't bad.

TurboDiesel 03-03-2012 09:27 PM

Re: K&N Panel Filter on CRD
 
no im not complaining, i can go about a week and ahalf average per tank

my old car i was gettin gas every week or less lol

suzieque 03-04-2012 11:18 AM

Re: K&N Panel Filter on CRD
 
Make sure that your air intake hose clamps are tight after swapping filters as you will throw off your MAF sensor at the air box.

roddaz 03-04-2012 02:02 PM

Re: K&N Panel Filter on CRD
 
checked everything all seams OK, Just thought I would mention a UK gallon is more than a US gallon, 8 pints compared to 6 pints.

suzieque 03-05-2012 11:06 PM

Re: K&N Panel Filter on CRD
 
I know in north america, the diesel fuel has more kerosene added in the winter months to reduce the gelling (jelling?) in cold temperatures, this reduces the efficiency of the fuel by about 10%. Not sure if they do that in the UK or not.

as I recall a UK (imperial) gallon is 4.54 litres, while a US gallon is 3.78, so about a 20% difference there.

I average 28 miles per US gallon highway and 19 miles per US gallon city driving. I also have the K&N panel filter.

airmail96 03-06-2012 02:13 PM

Re: K&N Panel Filter on CRD
 
Wow 28highway the best I have ever done highway was 24, think its time to look into a new filter lol.

BobT 03-14-2012 11:13 PM

Re: K&N Panel Filter on CRD
 
K&N filters are great for sports use but I'm not a fan of them for general use. Firstly, they need to be maintained or soon become clogged and secondly, any filter that lets more air through lets more other stuff through as well. Better to just replace the standard filter more often.


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