K & N

[mhainen]

I just installed a K & N in my 06' X3 using stock air box. I have K & N CAI on my 97 M3 and really like the slight change in power delivery + MPG. Has anybody used K & N on their X3? If so did you see any improvement in power or MPG?

[Rick in Prescott]

The extra noise has you believing you are getting extra power. Enjoy, K&N loves ya.

[judybe83]

ab installed a drop in K&N a couple of years ago.
he says any hp increase would be almost impossible to measure however we have noticed a few (very few) tenths improvement in mileage + he's cleaned it a couple of times so it's getting close to paying for itself

can't say much about noise because i CAN'T hear anything over these %^*& squawking doors!

jb

[mhainen]

Update. I just drove 100 miles of highway today at 70 mph indicated and saw 2 mpg jump on my computer (23.2 to 25.3). I had been averaging about 23 on the highway for the last few months. I need more time to track change in MPG. There is no additional noise from the K & N replacement filter using the stock air box.

[judybe83]

Originally Posted by mhainen

Update. I just drove 100 miles of highway today at 70 mph indicated and saw 2 mpg jump on my computer (23.2 to 25.3). I had been averaging about 23 on the highway for the last few months. I need more time to track change in MPG. There is no additional noise from the K & N replacement filter using the stock air box.

our computer is very (VERY) optimistic it always shows .9 to 1.9 BETTER mpg than manual calculation, jb calculates and documents every tank computer and manual. the computer has only got it right once!!

ab

[mhainen]

Jannis, cost was $49 US.

[YANNIS]

Originally Posted by mhainen

Jannis, cost was $49 US.

what ???????????

the cost in europe for a K&N filter is usd 180 !!!

are you sure ?

[mhainen]

Jannis, the cost in US $ was correct. I purchased at "Auto Zone". Maybe I should pack one in my luggage this summer and bring it to Europe for you We are thinking of Greece this year, but I may go back to Munchen for some more of that great beer!

Bis spüter!
Mark

[judybe83]

Originally Posted by YANNIS

what ???????????

the cost in europe for a K&N filter is usd 180 !!!

are you sure ?

we paid $48.00 (US) 3 years ago.

ab

[[email protected]]

Originally Posted by judybe83

our computer is very (VERY) optimistic it always shows .9 to 1.9 BETTER mpg than manual calculation, jb calculates and documents every tank computer and manual. the computer has only got it right once!!

ab

The OBC uses a flow meter to calculate MPG and if anything it is consistent--manually dividing the gallons at the pump into the miles traveled is not very accurate--every pump nozzle shuts off at different times and you never get a fillup unless you overflow the tank--and that will trip a fault in the computer. Also the gas from the underground tank may be cold--pump it into your tank and it will warm up and expand--
BTW this is the 21st century--computers replaced pencil and paper