I have a 2000 gt with an auto trans. I want a stiffer shift firmness. I have read about the sct/diablo sport tuners helping with this. My question is, do they work? I have heard they work to a certain level. I have read about companies, like performance trans and others, but they want big $ to rework the whole trans. Also is this going to put to much stress on internal parts. I have read about the aod/aod-e trans problems. I am not sure what those are and if mine has one. The problems I want to fix are the lazy shifting and also I have a zex n2o kit with a 100 shot and have experienced the rev limiter on serveral occasions waiting for the trans to shift. I know all you guys are saying why didn't you just get a man trans! The answer is I didn't want one! My last several cars were manual trans and my left leg is tired of stop/go city traffic. thanks for any help you can offer.