Hi and welcome,
First check out this thread:
zerothread/213450
There is a member here that does the ECU. You should speak with elwesso on that.
To answer your question: Yes, there are mods.
Member: elwessohttp://q45.org/bad/
http://q45.org
Member: superuberhttp://q45.org/uberq/index.html
Member : one ton garageTake a look at his sig!
http://www.onetongarage.com/
Member: Jeff WilliamsHe makes the Strut Braces
etc...
My advice is learn about the basics of Q45 maintenance and upkeep, then think about mods.