Ok...so let me get this correct. I have an automatic transmission and I want some more punch and quickness when I press down on the gas. (and yes I understand that I will not be getting more HP) I heard that the 1st model was very aggressive and that the revised 2nd model is still aggressive but not as harsh. If this is the case then I want the revised 2nd model...can someone who knows what they are talking about elaborate for me? Thanks...