Personally, I wouldnt mind picking up an Evo3 16g.
Right now I dont have any piggy back systems running, no manual fuel correction or anything, but my A/F ratio under boost goes directly to 11.4 on the wideband and it only cost me $100. Its tuned to 11.4AFR, more aggressive timing maps, adjustable stutterbox, fixed a few CELs that are common with my swap, knock light built into the stock boost wire, and a few other options, all for $100 and I can get updated chips for $15. How do you ask? EPROM chip from
www.keydiver.com If your running an 8g, Im not sure if you have are able to use an EPROM chip or not, but if you can, it would be a great way to go. Definitely a great option for 7gers who can use a 1g or 2g EPROM chip.