The MAF is an excellent sensor in that it has the ability to measure four different characteristics of the incoming air simultaneously: temperature, pressure, volume, and humidity. This ability give the fuel management system remarkable flexibility and adaptability. One drawback, however is the MAF represents a significant restriction to air flow into the engine. In stock trim the MAF can flow around 529 cfm maximum - OK for stock applications, but not if any modifications are performed.
The major restriction is the "debris screen". It is meant to protect the delicate heated wire, but to you its purpose is to keep your car from GOING FASTER.
Fortunately, there is a relatively simple modification that can be done to net larger gains in air flow - up to 180 cfm in most cases, and usually more.
No noticeable
power gain was detected. But there was a slight increase
in exhaust tone at ideal and throttle and I seem to be
getting better gas mileage.
First unplug the MAF, and remove it
from the car. Place the sensor on a firm, flat surface.
You will notice that the screen is held in with a metal or
plastic ring that is glued or fitted into a bore (grove) on
the wall of the MAF housing. Using a sharp tool of some
type (small knife or screwdriver) work under the ring until
you can wedge the tool between the ring and the bore. Take
your time - it is very easy to slip and damage something.
Then, work your way around the ring, carefully prying it
away. The metal ring will just pop out and the plastic one
may crack. At this point you will know you've won this
round.Some OE MAFs may have two screens,
so do the same procedure on both ends. Some after market
MAF units have only one screen.You've just gained about 180 cfm in
about 10 minutes or less. And most of that time will be
spent putting the air box back together.
SPEED UP OR GET OUT OF THE WAY!!
Get your own Free Home Page