important as having the right size intercooler. currently the only fmic design there is is the horizontal flowing UAS/appollo/border style. the heigth and width are too short and the tube length is too long. they arent a very good design. if the core is vertical you can get a much better effect because you have plenty of tubes but short tube length. but to do the core vertically requires more work to make it fit. the way I did mine I had to redo my piping,get a shorter radiator and lose my ac. but my fmic will flow 1154 cfm's at a 1-1.5 psi drop.
