If your car has been converted from auto to manual you wont have a neutral switch, this will cause your timing to be 25 degrees at idle instead of 15 !!! There is a easy fix and car will idle alot better aswell !! cut the yellow with blue stripe wire, insulate the one end (i put some heat shrink on mine) and cable tie it where its not going to short out , now crimp a eyelet on the other end of the yellow and blue wire closest to the brown connector and ground that on a available 4mm bolt hole . you may need to extend the wire with a similar gauge wire so that can bolt your eyelet where its not going to get in the way ! you can check that your neutral switch has been grounded out via conzult or datascan.. Can this be added to the tech section could help a few ppl out there !