I have been planning out a custom intake for my car, and today I finally got around to examining the lower intake--which I have long suspected to limiting horsepower.<p>Here she is:<br><IMG SRC="http://i70.photobucket.com/albums/i117/paysts/Intake001.jpg" BORDER="0"><p>As you can see, the portion of the lower intake is not round, but oval shaped and not greater than 2" in diameter. I would estimate it to be about 1.75". The intake on the turbo side, however, is 2 1/2 inches in diameter. Why Volvo would do this is beyond me.<p>As you can see, this tiny flashlight doesn't have much room in the intake.<br><IMG SRC="http://i70.photobucket.com/albums/i117/paysts/Intake003.jpg" BORDER="0"><p><IMG SRC="http://i70.photobucket.com/albums/i117/paysts/Intake004.jpg" BORDER="0"><p>For this reason, before I bother with a tune or a FMIC or a downpipe, I am going to resolve this issue. I have took it upon myself to order some piping to ail this problem. I'll keep everyone updated.<p>By the way, can anyone with VADIS tell me what the sensor is that is on the intake tube? It looks like a temperature sensor, but I'd like to be sure about this.