Can it be DIY'd, or does it need to be done by a professional?

If it can be done at home, can anyone provide a step-by-step guide (with pictures if you're feeling particularly generous!)

Yes you can DIY, yes you can do it at home and yes someone can provide a step-by-step guide, complete with pictures because I'm feeling very generous.

It's not my guide, but it's something that a simple search of the forum found.

http://www.polog40.co.uk/modification/dewedge.html

Edited 4 July, 200719 yr by tobyk

those are my grubby hands! That was ages ago now, it was at my mum's house still, must be about 3 1/2 years ago.

Anyway, not sure there's much point on a GT really, the wedges are pretty small and only on one of the throttle plates (GTs have two), isn't going to make much of a difference to air flow. Still, it's easily undone if doesn't work out.

yeah on GT's they just make the car a bit more sensitive off idle, and some cars seem to have an erratic idle once its been done. If you're going to use a rivet, its likely to cause more of a restriction to airflow than the wedge would in the first place

So general consensus is that there's not much point doing it on a GT?