i recently fitted 4.11's to my falcon 6 and fitted a shiftkits.com speedo adjuster now my speedo is still out about 15k's whichmakes me think my auto electrician friend wired it in wrong

has anyone else fitted one of these to an ef gli before or had similar issues?

The best way to do this is
1 Fit an XD-XF transducer with the black gear for the 4.11's This makes the speedo accuarte but stuffs the auto shift points
2 Wire the shift kit into the ECU Speedo line and correct on that side, then your shifts are right. Doing it this way allows you to adjust the shift points for your auto using the pots in the speedo corrector.
Brett