Thanks, I put the vid together and chose the music!
DannyP's ABF dynoed out at +170bhp with an ABF on Digi3 and a homebrew four-branch on it, with no mods to the engine.
Why put anything other than the OEM management on it unless you want to spend hours and hundreds (if not thousands) of pounds trying to match those figures? 
Clearly dynos differ, so asked the dyno operator what is the best output he's seen on that dyno with a Digi 3 16v. He's had many 16vs on there, and the answer back was 168bhp with a 4 branch. Lowest was 146bhp, fully standard, standard average around 155bhp.
The only reason to put non-OEM management on it is to enable more user-friendly remapping, and obviously to take the scientifically proven gains available, rather than dealing with the relatively specialist job of interrogating ABF ECUs. I appreciate that it may look like a lot of money was spent, but the reality is the Megasquirt box was self built and the operator has seen many 16v maps, so a start map wasn't difficult. It cost time, but with a little knowledge and folk who avail themlseves in Club circles, not actually lot of money.
There are nearly 20 16v cars in varying states of tune going on the same dyno for a dedicated 16v sesh this coming Sunday, and there should be some fascinating data from that.
I appreciate the OP is interested in sticking with K-Jet, but interesting and solid data to add here all the same & the operator does take his 16v studies seriously!