Hey everyone,
so I have been having an on going issue and can’t seem to figure out what is going on here I get no/very weak spark to my plugs but let me give you a run down on what’s been going on

took a 95 far chassis and swapped in a fully built ls turbo into the car,
sleeved block 84.5
manley rods
suptertech pistons
full crowed head retainers springs valves
404 cams
rc 750
edelbrock intake mani
skunk2 alpha tb
precision 62/62 turbo
Hondata s300
ls wiring harness with vtec sub harness
so I had the full ls turbo in it ran good got bored with it,
so decided to go ls vtec to change it up so swapped the heads no problem with the lsvtec kit new distributor no plugs new wires same injectors stock intake manifold with the alpha tb.... and now I get no spark or an extremely weak intermittent spark and have become lost. Tried two different dizzys took the guts from the running ls one no spark pulled my buddy’s out of his running gsr still no spark, the kicker being I drove it into the garage to change the head and can’t get it to start good compression fuel and air but no spark.... totally puzzled and have no idea what’s up please help as I have been working at this for about a month


these are before and after with red ls head and the gold b16 head

 

Possibly a issue with the sub harness, ECU calibration like TPS setting, injectors, or swapped sensors causing it not to start, maybe the map and TPS are swapped it happens.

 

First thing I would do is RE-ROUTE that big *** power wire before it starts an electrical fire. From the look of things, recheck your work. Wires all over the damn place.

 

its a 95, I would expect some sort of electrical wiring issue as I did. Start with the engine harness where all the distributor wires flow to the ecu.