With the E38 / T43 combo, you have to make changes to both ECM and TCM (both the same steeings) to get the speedo to match the GPS
With the E38 / T43 combo, you have to make changes to both ECM and TCM (both the same steeings) to get the speedo to match the GPS
2011 VE SSV 419 + CAM + Whipple 2.9FF SC + PPV front struts + Bilstein rear shocks + 6L90E with single piece carbon fiber prop