Holy Shiznit, removed the MAF screen...
04-01-2003, 05:19 AM
#32
What exactly should it feel like when you take it off?
In other words, how can I tell if my filter has an internal velocity stack (green filter)?
UrS4 - what type of codes would you expect me to throw if I didn't?<ul><li><a href="http://www.audi12v.com/mods/engine/intake.htm">Pictures of my cone setup.</a></li></ul>
UrS4 - what type of codes would you expect me to throw if I didn't?<ul><li><a href="http://www.audi12v.com/mods/engine/intake.htm">Pictures of my cone setup.</a></li></ul>
04-01-2003, 05:54 AM
#33
If its a normal, non VS type outlet on the filter you can place your fingers...
inside the filter housing from the flange end (flange is the protruding rubber tip that has the hose clamp). If internally at the filter end of that flange you can feel a sharp, flat 90* edge from the flange to inside the filter housing it's not a velocity stack. Conversely a velocity stack molded into the filter base will have a smooth, radiused countour without any sharp edge as you run your finger over it's surface from it's outlet flange up and into the filtered area.
For instance when you place your finger inside the flange as far as it will go then place it against the internal base of the K&N then slowly pull it out keeping it against the rubber base and into the outlet area if it's a VS type filter it will be a smooth, radiused and tapered transition. If its not it will have a distinct 90* sharp edge where it exits into the flange.
For instance when you place your finger inside the flange as far as it will go then place it against the internal base of the K&N then slowly pull it out keeping it against the rubber base and into the outlet area if it's a VS type filter it will be a smooth, radiused and tapered transition. If its not it will have a distinct 90* sharp edge where it exits into the flange.
04-01-2003, 05:56 AM
#34
If you take the filter off and feel in side of it you should feel a rounded edge
Imagine the inlet horn in the picture as the base of the cone filter.
<img src="http://pictureposter.audiworld.com/38881/mafinletinstalled3.jpg">
<img src="http://pictureposter.audiworld.com/38881/mafinletinstalled3.jpg">
04-01-2003, 06:19 AM
#36
I don't remember the code numbers but there were two separate ones...
with MAF-related definitions. "Out of limits/parameters" kind of things. But the cars ran fine and I didn't even know the codes were in there. Two cars went into limp mode and that caused me start following this more closely and pulling codes summarily. There also seems to be some correlation associated with high ambient temps. None of the cars threw a CEL or went into limp mode once winter set in. But I was also by that time already doing MAF inlet horns so I don't know if it was causal/affectual in nature.
And hot air is widely known to be significantly more inherently turbulent than cool, dense air. Airplane take-offs/landings in cool vs hot temps are a perfect example.
And hot air is widely known to be significantly more inherently turbulent than cool, dense air. Airplane take-offs/landings in cool vs hot temps are a perfect example.
