I had my SI up to 140 back in the day as well. If anything the F22 tranny has longer gears and would top out at 150. To get rid of the fuel cut you can also get the rev/speed meter by apex-i from what I hear. This will alloy you to bypass the governor
KAY- I wouild also try the other ECU if you did want to test the limits. It should just plug in.