Got my car back yesterday evening from TF after they changed my diff over from the race spec diff I had fitted when I had the 6 speed conversion, the conversion components were purchased by me and the diff was supplied as an unknown spec, it was a big surprise to me at Santa Pod that with my spec I was only getting 13.7 1/4 mile times and was having to grab 5th gear, it turns our the ratio of the diff was set up for acceleration and was costing me a lot of terminal speed, for example I was at red line in 4th at 95mph, I knew something was wrong but as both my last Supras were Auto i had nothing as a bench mark, well the transformation is amazing and I have been playing all day , along with the new twin fuel pumps and FPR (thanks Gaz ) I am getting there now, just need to move the mapping up from the 0.8 bar to 1.5 again now the fuel is sorted and I am ready for the pod again in two weeks time