Quote:
Originally Posted by Spuds
One note is that (iirc) Perrin's r&d paper on their CAI said they experimented with removing the air dam between the grille and filter element and found that it created some turbulence that affected the MAF. Since accurate MAF is kind of important for making power, they left the air dam alone.
|
I couldn’t find any information or testing in regards to the front crash foam.
Besides not being a fan of oiled filters, I also didn’t like how the perrin filter “sat”. In Perrin’s picture it is fully exposed on all sides but on many other peoples pictures and including mine it always sat on the crash bar and was basically blocked by the bottom and “lip” sticking up so only airflow could go in from behind and up to the top basically limiting service area. Switching to beatrush crash bar and swapping on a 2.75” x 11” coned dry filter it is now truly open all around.
I also don’t see how it would create turbulent air removing the foam. Air comes in straight at / into radiator at which point it will diverge into radiator and some will go up and into the holes on the plastic piece. I don’t see what would really cause it to instantly diverge up prior to encountering any resistance or obstacle. The space directly behind the front bumper which is now wide open and has a straight line to the filter should still be a low pressure non turbulent zone just much closer or straighter path to fresh cool air.
Not saying it’ll make gains, but possibly maintain HP / less heatsoak type issues.
Disclaimer: I also have a sprintex SC may change some factors regarding all of this and the benefits etc...