The IS F went back on the dyno today and things went very well! We turned the boost up to 7psi with the new injectors and with a few other changes we were able to conservatively make 552whp. We made a total of 40 runs in 4th gear because 6th just takes to long to pull to red line. As you can see in the charts we were able to get the air fuel ratio pretty stable and the stock ecu did not change very much throughout the day. It was a challenge at first to get the ecu to let us do what we wanted but we found the right combo and are extremely confident in the tune! We are planning on checking the tune after the (200 mile) barrier to see if it has changed at all. Here are the dyno charts, I will post a video in the next few days!