Originally Posted by JK
You should be able to get away with a 90 degree reducing bend that goes from 3" down to whatever size the TD04 inlet is. Then buy a 3" 180 degree J-bend with like 18" legs, and a filter with a 3" inlet to put on the end. I bet that would work. If you want to keep the stock airbox I would honeslty think about using the stock cast pipe, and just cut off the end and find a 90 degree bend to go from there to the turbo inlet.
Well I spoke with the guy at boostcontroller and they have a reducing elbow from 3" to 2.5", but a single 3" 180' J-bend with 18" legs would be $600.
He has a 3" 180' aluminum pipe available with a 4.75" radius and 5" legs which would only be $40. Think this would work?