240SXer wrote:Is there anyone in So. Cali that can dyno tune my ECU?
There are all sorts of shops. AEM has really been pushing their EMS system. I don't know of anyone running one on a 240SX yet. You might be able to contact them and work out some deal where they'll tune it for you, simply to get exposure in the 240 community.
As J-Spec pointed out, you are quicky reaching the point where you are going to have to upgrade a bunch of stuff at once. If you want a few extra horsepower now, you can get some mild cams. A simple cam change won't take you into the 12's though.