Not to be picky, but I looked at it this weekend, and the doc is called TuneTip1.doc, I believe. I know I was confused first time I tried to find tuning.doc (but, then that's not hard.:-) Steve -----Original Message----- From: nacelp [mailto:nacelp@bright.net] For an idea try tuning.doc at the FTP. Most gm maps have the PE timing added as a function of TPS (and other parameters). Grumpy