Ive been helping my buddy out with his Hahn turbo and port fueler setup. It doesn't look likle a to bad of setup but been having a lot of problems with it.
After having Schintz tune it to make it run somewhat right, it over heats whenever you riding in town or stopped at red lights. As for break downs its a common thing, but if you how to fix it and dont mind working on your bike every week or two (replacing fuel lines, tryn to figure out why it wont run, ect.) it might not be that bad. I will tell you though it will set you back in the seat when it is working right.
If you dont wanna do wheelies not so sure turbo is your cup of tea. It dont matter what gear your in as soon as the Hahn kit spools up and makes boost look out your on the rear tire looking at the clouds. With pratice you can keep it down, but dont think of dropping a gear or 3 and grabbing a whole hand full of throttle without lifting the front end.
My buddy ended up putting a small stretch on the back 3" and it made a huge difference.