New parts
New Greddy plenum with 70mm throttle which should help reduce what seems to be a restriction on the inlet

I've also ordered a set of Tomei cam sprockets from RHDJapan seeing as the Nissan VVT is pretty pointless now.
Only thing left to sort is horrendous brake judder. I've had the disks skimmed while they were off, but it's worse than before with the pad deposits stuck to them. There's no obvious reason other than they were skimmed on the piss

I'm going to call Scole Engineering tomorrow as they do on the car brake skimming which they can do, but needed to check they could do 356mm. If that doesn't cure it, feck knows what the problem is.