it is not even the same bike after these two mods - while I don't open it up that far too often when riding the single track in the woods, the extra throttle is awesome when I'm giving it hell on a fire road or a sandy beach
When I originally bought my WR I went to buy a DRZ. I raced the salesman down the road and the DRZ was faster in stock form. I told the dealer I couldnt believe it. He said to give him a minute and then he had the YZ throttle stop put on it and we raced again. The WR was now much faster because it could use more throttle. You need to replace your throttle stop, even if you don't think you will need the extra power. You don't have to use it but knowing its there is nice and as you gain confidence in your skills, you will roll on more power.
Have fun and be safe