Remember that downforce is only one of the benefits of a trunk spoiler. Many reduce aerodynamic drag. For instance, the early 6th gen Maxima's miniscule optional trunk lip spoiler reduced the car's Cd by .02 (.28 vs .30). You don't need to reach high speeds to gain the improved Cd.Paul Wall wrote:About the spoiler, Is that true that it makes a differnce at 45 MPH or do you have to be going 120+ to get a differnce?