iam up grading my arrow rest to a wisker bisket rest. i shoot feathers on my arrows, will this effect the flight of the arrow?

If you don't tune it properly it will.

Feathers do well through a whisker biscuit. I'm currently shooting Blazer vanes through mine and they are a great performing vane. They do not develop waves on the vane and they control broadhead flight like a 5 inch vane. Tuning is the same as any other rest. I personally like to start with a bare shaft. Good luck.