If he were closer to you Dai, I'd be advising he came to you mate.. Topcat, Dai knows his tech stuff very well, I was lucky enough to have Dai as supplier / mentor back in the day. The 'Piro will take over where 2568 left off' wasn't quite realised though eh mate!
I've got a Piro 8 cyl ECU in the garage which I installed on a Jeep 5.7 probably nearly 10 years ago, owner said he left vehicle stood for a year and when he put it back on the road the LPG didn't work, switch didn't even light, so I ended up removing Piro and fitted OMVL or some other AEB2568, but I've just thought... Does Piro have a relay for ign on that might have had it... Piro ECU I have might not be too difficult to fix...?
I can't even remember if Piro software and cable driver run on Win7? This new laptop came with Win8 but I immediately removed that and installed a multi boot system with Win7 64 bit, Win7 32 bit, XP 32 bit and DOS.. Only had this laptop a month or so but with various LPG software have needed them all since getting the laptop!
Dai, what do you reckon to his map and my suggestions? That 1.62 1.54 1.55 1.52 shape seems unintuitive for the bottom end, would expect a possible peak at 2ms, a low point at 2.5ms, rising to peak at 4.5ms, quick tale off and then gradual fall with load, the figures from 2500-6000rpm / 10ms to 18ms particularly wrong unless in attempt to compensate for Piro's failings, idle point probably not far out at 3.4ms on petrol, so mid load points probably also not far out. Dai and I have been discussing this sort of techy stuff in phone chats for many years, this might be a bit like a phone chat, only we're on a very loud speaker phone. I'm not calling now Dai else we might be talking til 3am