Couple of minor items - from someone who had to take his EFI’d FJ40 back to @Trollhole to get it right.
Timing - can;’t give you specifics, but get it set & tighten.
Make sure your points and rotar are clean
Open & clean the inside of the dizzzy...
I have been slowly figuring out some Sniper tuning. I bumped the timing up to 10* (I still don't have a working primary vacuum advance) and I started to get the "stalling coming to a stop" problem. I also got bucking and lurching when crawling...
I've experienced many of the symptoms mentioned such as stalls coming to a stop and bogging under load. I'm all Mac and haven't purchased a PC yet to download the Sniper software to manually tune. What I did learn is RF interference can be the...