I never did get a chance to do further testing as far as lift results on the air dam, traffic conditions weren't clear enough every time that I had time to test.
Anyway, The top speed increased to 153 mph at 5200 rpm and the steering feels solid so I would say it is an improvement. Also in side winds the car hardly moves at all now.
Nevada Open Road Challenge in two weeks! I'm there! Grand Touring division, 125 mph class
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
67 Impala SS air dam
Threaded Mode