How should I tune it?

If you are looking to tune your own ride then check out Moates Quarterhorse. You can get all the info you want over at EECTuning.org • View topic - Things to know BEFORE buying a TwEECer or Quarterhorse

there is a guy on EECtuning (Decipha) that I heard was doing tunes via email (for a small fee) for the quarterhorse. I believe he also works at a tuning shop during the day, so he does have experience. That might do you justice until you get the grasp of tuning for yourself. Plus there is plenty of support (and opinions) on the site.

You could also get a mail order tune from Bob Kurgan (aka flyin hawaiin on Corral.net). I hear he is real good, but you have to use specific parts on your car (MAF that I know of). I think he uses the SCT chip.

If the guy comes recommended by more than his friends, make the drive, get the dyno -AND- street test ride, get a room for $100, have a beer, then drive home.

You'll easily spend $600 to purchase a tweecer/Quarterhorse, Wide band O2, software, etc. and you'll still "not know" what to do with the software until you invest several (aka Many) hours into understanding how to properly tune your ride... and even then, you won't know how much torque/HP you're making without the chassis dyno.

I chose the scenic route because this is not my primary vehicle...and despite spending serious coin on my EEC setup, I still fully intend to do a chassis dyno.

Regards,

-D