Is there a difference in the dp with cut out from modernperformance (has switch to open and close) or a mopar cat delete ? I guess is the power really that much different for the two different prices?

 

there to different products. a cat delete is a race pipe or a dp that doesnt have a cat in it so its just a single piece of bent tube. the dp with cut out is a upside down Y shape and on part of the Y is opened by a switch so your exhaust can leave through your dp instead of going all the way through your exhaust.