Well, after getting my new Zed a few weeks back now, I've got around to doing my 1st mod - installing the grounding kit (same one as mentioned on this thread).
I have to say I've noticed a definite improvement - smoother idle and acceleration, low-rev driving is less snatchy and its easier to hustle the old girl around town now.
Definitely worth the £40 and Sunday afternoon in the sun fitting it!
Next on the list is sorting out the soundproofing... and the big scratch on the front spoiler which I managed to pick up driving out of Swindon railway carpark!
On my last Zed I managed to bump the front and back within a week of buying her, I suppose it stood to reason I'd do something stupid with this one but why did it have to be on the Nismo kit - ARGH!