You will not need to dyno your car to get an aftermarket ECU. Check out the group deal section of
www.maximadriver.com they are having a group buy on Gforce ECU's right now. You can also check out
www.cattmanperformance.com they have JWT ECU's for sale. These are the only two brands I would recommend.
As for your VB, there are only two ways to get it done. Don in Texas (on
www.maxima.org) sells a VB mod for $450, you have to send your VB to him, or put down a deposit to have him send one to you, check out
www.mobiletek.net for more info. You have to do the work yourself.
You can also look at
www.levelten.com they sell a VB mod for $650, again you must do the work yourself.
Last but not least, there is
www.txchange.com that sells a kit you can modify your VB yourself. It's only about $40, but it takes a LOT of work, and is only for the mechanically inclined to say the least.
As far as having a shop do any of this work for you, good luck. Most shops will not want to deal with any of this, it's too risky for them business wise. If you don't mind driving, you might want to hit up one of the Norcal or Socal guys, lots of them have done this mod before.
Good luck
