We have been tuning Cadillac's all the way back to the OBDI cars. N0DIH is our authorized tuner on the board. We have tuned about 10 XLR's, 3 V's and several STS's and STS-V's. We try to stick with 2006 STS-Vís and 2007 up for the other RWD Northstarís
2004 to 2006 XLR tuning takes us a long time. We would need to car at our shop in Rock Hill and it will take about 30 dayís to get the tune done.