When I first installed it it felt like it pulled harder up top but it might have been in my head. Also it's a quiet Intake you don't hear it much like the others. If your planning on throttle body and/or headers I would buy it as that's what I have heard makes a big difference. It seems to shine with the additions of the other mods.
The Vararam is the best performing 4G intake available right now. A friend of mine switched from a K&N to a Vararam a few weeks ago, and dropped .3 in the 1/4 mile just from swapping intakes. The passes were made 7 days apart in similar conditions, so the Vararam is definately making much more power. They offer these with a black textured, black smooth, or hemi orange lid.