You are correct the blue tops increase pressure which gives a much firmer shift. There is a good right up on the SRT forums and on MB World about this Mod. Transmission solinoids solved all my problems! - MBWorld.org Forums
We have the same tranny as the SRT8 and the hemi's so it looks like we should be able to use there tranny module. I am trying to get a company to set me up with one so I can test it for them and verify that it will work in our cars.