> 1) I strongly recommend that you advance the timing. This made a big > difference in my 90 200TQW. Surprisingly, it made a bigger difference in > the 90 than in my prior 87 5tq. Turbo lag will not be erased but you will > get the turbo kicking in about 500 rpm sooner. The cam timing? Ignition timing can't be changed without modifying the ECU. Orin.