[05CruisergtHO]

On Mine it only gave 5 more hp due to it being an 05 HO stock having 230hp. BUT. it adds about 20ft/lbs of torque through out the power range. Yours being an 04 stock have 220hp, it will bring you upto 235hp and 260ft/lbs of torque. It's somthing to think about latter if you desire a little more gitty-yup plus it does not affect mpg's that much, I'm getting between 270-300 miles per tank so its not to bad. Just dont let your lead foot get bored!!!