Stage 2 allows more adjustability/flexibility/control of the map over Stage 1 and is definitely worth it for the £60 upgrade fee, so long as you set it up to its full potential
Stage 2+ i really wouldnt say was worth the difference given the huge outlay (LOBA pump is £500+ as i'd never go the internals route on a used pump, plus the £60 map upgrade fee again). There is more pull/torque low down (below 4k rpm) but nothing really gained at higher rpm. The K03 isn't as fuel limited as its big brother, it's very much flow (boost limited) as the N75 runs flat out at higher rpm.
Then again my standard pump was fairly new and wasn't struggling at all with the Revo stage 2 file so it may be different from others.
WMI made a bigger difference than the 2+ upgrade, well worth considering along with a front mount. Even in the recent temps (21 degrees ambient on the weekend) the car still felt as awesome as they do on cold damp mornings, compared to last summer without either)
Just my 2 cents worth having gone every stage from standard to 2+
I'm at the same stage, revo 1+. Just gotta buy a decat downpipe and I'm sorted for stage 2. Already got a cat back milltek, revo intake. My LPFP is starting to give up with giving me lumpy idle for a few seconds. Just as I get close, something else breaks!
1+? there is no 1+ with Revo. Are you sure it's the LPFP? They normally give up under load, not at idle. Easily checked and verified with VCDS