I used to run an open cone on my 97 GTP, allways seemed to work good. I made my own cone setup on this one, and seemed to run like shit after the car got warm. So I just drilled the stock airbox and put it back on with a K&N stock replacement. Should be plenty of air for what I am using it for.
I have a Diablo InTune for it. Of course, I am waiting on them to add my VIN for support, hopefully that will be here soon. Biggest thing I hate about the car is the Displacement on Demad. Kicks in very often and just makes the car feel like hell. Pretty much the first thing I am tuning out of it.
Im doing everything I can do to help the trans. I put a 16 pass derale trans cooler with a fan, a remote trans filter setup, replaced the stock trans filter and put synthetic Dex 6 in it. Plus I do all the trans tuning tricks. Im hopefull, but not optimistic.