Prepare whipped topping mix as directed on package, using large mixing bowl. Add remaining 1 3/4 c. milk and pudding mix. Blend; then beat at high speed for 2 minutes, scraping bowl occasionally. Spoon into pie shell. Chill at least 4 hours.
For 8-inch pie, use 1 envelope Dream Whip, 1 1/2 cups milk and 1 package (4 serving size) instant pudding mix.