Just so we are all clear - by "advance the timing" I mean to advance the cam gear a tooth (I think that's about 8 degrees). On a stock Audi turbo car or one with just a chip this will result in better low end response with the turbo kicking in sooner. The drawback is less oomph up high but this really isn't noticeable unless you have replaced the stock exhaust. HTH Matt Pfeffer - 89 200TQW