I don't have a scan to share at this time because I think my question can be answered without one. I have a new built 4l60e transmission in a 99 silverado. I have done the bluecat tune adjustments, and the trans functions the way it is suppose too except.... At 55mph when the converter is suppose to lockup it will slip and cause the pressures to go up on the 1-2 shift. Pressures drop back to normal after shutting the truck off. This issue only happens at the 55mph lockup. Above and below 55 the convertor does what its suppose too. There is no shutter or surging associated when driving the truck. I do have to finish tuning the MAF past 4k rpm, but have to get the new injectors in first due to a lean issue past 4k. Thanks for any help. I can get a new scan this afternoon if it is needed to help with my issue. Thanks in Advance