Performance Forced induction, intakes, exhausts, torque converters, transmissions, etc.

K&N Drop in Air Filter

Thread Tools
 
Search this Thread
 
Old 06-04-08, 03:08 PM
  #16  
Joeb427
Lexus Fanatic
iTrader: (1)
 
Joeb427's Avatar
 
Join Date: Aug 2007
Location: SC
Posts: 11,670
Received 17 Likes on 16 Posts
Default

Originally Posted by EJC
The measurements are by the cars computer - avg not instantaneous.
Yes I've modified my driving habits, but I did that well before the filters were installed.

On the '02 ES300 - the best highway mpg I had ever seen was 28 (avg), more normally 26.5 (Avg). After the K&N was dropped in I hit 31.5mpg (avg).

My Kids '06 SantaFe popped from 18 to 22 highway after the filter was installed.

The SC420 I seem to be able to keep around 20mpg combined highway/local now, used to drop to 16.5 combined, it does more around town because of the wife.

The IS250awd is now doing 26mpg, from 24mpg, I think i can gooose it higher with driving technique. It's hard to hold the car back.

For the hell of it, I spoke with a contact I have Lexus corporate today and passed it along. Let their engineers verify or disprove it. If it holds true, I just saved them a whole bunch of R&D $$$$$.
Believe me,it's more the difference in driving habits than a air filter.
Lexus and every other auto manufacturer are aware of the MPG and performance claims of a K&N,Tornado and every other so called performance and MPG gain item.
Still the paper air filters in vehicles.The auto engineers must not know what they're doing.
Old 06-04-08, 03:09 PM
  #17  
lobuxracer
Tech Info Resource

iTrader: (2)
 
lobuxracer's Avatar
 
Join Date: Jul 2006
Location: Georgia
Posts: 22,369
Received 4,020 Likes on 2,435 Posts
Default

Originally Posted by EJC
The measurements are by the cars computer - avg not instantaneous.
Yes I've modified my driving habits, but I did that well before the filters were installed.

On the '02 ES300 - the best highway mpg I had ever seen was 28 (avg), more normally 26.5 (Avg). After the K&N was dropped in I hit 31.5mpg (avg).

My Kids '06 SantaFe popped from 18 to 22 highway after the filter was installed.

The SC420 I seem to be able to keep around 20mpg combined highway/local now, used to drop to 16.5 combined, it does more around town because of the wife.

The IS250awd is now doing 26mpg, from 24mpg, I think i can gooose it higher with driving technique. It's hard to hold the car back.

For the hell of it, I spoke with a contact I have Lexus corporate today and passed it along. Let their engineers verify or disprove it. If it holds true, I just saved them a whole bunch of R&D $$$$$.
They won't waste their engineer's time with it. It doesn't filter to the original spec (has been proven over and over again) and the increases you are seeing are not related to the filter (also proven over and over again). Sorry, BTDT too many times to count, and there are no significant increases from filter swaps. I bought my first K&N almost 30 years ago, so it's not like I haven't tried, they've just never delivered the claims.
Old 06-05-08, 07:22 AM
  #18  
Gernby
Lexus Champion
iTrader: (1)
 
Gernby's Avatar
 
Join Date: Jul 2006
Location: CA
Posts: 3,844
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by caymandive
Less air = less fuel thrown into combustion which equals slower car/increased fuel mileage.
Warm air and warm fuel mixes better, which gives a more efficient burn. It has nothing to do with reduced air density or the car being slower.
Old 06-05-08, 07:28 AM
  #19  
caymandive
11 Second Club

iTrader: (2)
 
caymandive's Avatar
 
Join Date: Dec 2005
Location: N.Va
Posts: 4,066
Received 72 Likes on 35 Posts
Default

Originally Posted by Gernby
Warm air and warm fuel mixes better, which gives a more efficient burn. It has nothing to do with reduced air density or the car being slower.
I guess what I mean is that warmer air holds less O2 molecules so the car requires less fuel with the more efficient burn. The trade off is less power.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
pinpoint
ES - 1st to 4th Gen (1990-2006)
7
08-13-13 05:18 PM
mtschirret
GS - 2nd Gen (1998-2005)
19
03-09-12 06:07 PM
UberNoob
Maintenance
113
10-12-11 11:12 AM
SoCalPunk
Performance
3
08-27-08 06:22 AM
rayray76
Performance & Maintenance
5
09-17-06 09:28 AM



Quick Reply: K&N Drop in Air Filter



All times are GMT -7. The time now is 01:03 PM.