I am going to attempt to verify and adjust the mixture on my 90 jetta 16v. It is a cis-e motronic. I am using the info on the following page:
http://www.iders.com/alexweb/vwtuning1.html I have a tt chip programmed for the tt cams installed now and my car has slight ping under load. It has always had a slight ping, barely audible, but you can feel the car back off the timing. The new tt chip and cams seems to have made it a little more noticible than my old tt chip. I've already set the timing for 5 degrees advance and that didn't make any difference. Anyone have tips on how to adjust the mixture aside from this page? What is the best way to get access to the adjustment screw? Drill and thread a small screw into the plug then pull it out? Has anyone done this except Alex, who created the help page above? :) Chad
