I'll base my review on what i know, and i'm no expert, but here in Ireland octane booster is a must, we only get 95 RON standard at the pump
This stuff was recommended to me by my tuner, he is a good friend of Niki R tech and they have worked closely on maps over the years and share info on tuning the TFSI.
NF has made a noticeable difference on the performance of my car, i've no technical data to back this up, but i've been using it for the last two years and there's real mid range shove that wasn't available previously.
More over than any performance gain is knowing that my engine runs better, free from potential knock.
I use half a bottle per tank, which by the manufacturers calculations should take me to 98 RON, most of you run these levels of octane as normal practice. 6 octane per bottle is what the manufacturer claims, so do the maths, you guys should hit 105 if you use a full bottle.
Before going TTE420, i ran Ko4 stage 2+ for 3 years, same hardware, i used NF before the swap and noticed a real difference.
I think it has to be said before people get carried away, this isn't a remap in a bottle, it will certainly help, but please be realistic
@Shoduchi would be great if you can get it on the dyno and graph the real differences