What's the best air filter to use?

[echaru]

I have no scientific proof that shows if K&N hurt MAF or not, but I can tell you my experience with K&N filter.

I had Toyota Echo 2000 that I bought in 2005. I put K&N filter in a month after I bought the car. In 2008, the engine light came on. It took forever for me to find out what the heck was wrong with the car. I did a bunch of maintenanace while I was at it. I changed spark plug, oil filter, fuel filter, serpentine belt, battery, front and rear breaks. Engine light still on.

The last thing I did, before I gave up,was replacing the expensive MAF with a new one. The engine light disappeared. After that I changed the K&N filter with the normal stock paper filter. I drove the car for 2 more years, no check engine light. Then I traded the Echo in for the Yaris, 2 months ago.

[RedRide]

Originally Posted by echaru

I have no scientific proof that shows if K&N hurt MAF or not, but I can tell you my experience with K&N filter.

I had Toyota Echo 2000 that I bought in 2005. I put K&N filter in a month after I bought the car. In 2008, the engine light came on. It took forever for me to find out what the heck was wrong with the car. I did a bunch of maintenanace while I was at it. I changed spark plug, oil filter, fuel filter, serpentine belt, battery, front and rear breaks. Engine light still on.

The last thing I did, before I gave up,was replacing the expensive MAF with a new one. The engine light disappeared. After that I changed the K&N filter with the normal stock paper filter. I drove the car for 2 more years, no check engine light. Then I traded the Echo in for the Yaris, 2 months ago.

Fact is, a MAFS can go bad without ever using a K&N type filter. So, chances are your MAFS would have gone bad even if you never used a K&N.
The has never been a documentd case where a properly oiled K&N type filter damaged a MAFS.

When I first got my '02 Celica (purchased new) it idled eratically at times.
So, I cleaned the MAFS (which is easy to do) and it then idled perfectly at all times,
I then installed a K&N and it was fine for over 8 years up to the day I sold it recently.

[auxmike]

How do you clean a MAFS
I picked up a brand new Toyota one for $60, so I have a spare...

[RedRide]

Originally Posted by auxmike

How do you clean a MAFS
I picked up a brand new Toyota one for $60, so I have a spare...

1) Take it off
2) Gently clean the sensors with isopropl alcohol on a Q -tip.

Edit:
Here is a DIY I found.

http://www.yarisclubuk.com/index.php...nsor-cleaning/

Some more info....

http://www.top4runners.com/ja/cleanmaf.html