Heyojaybo

I ended up ripping neo out and just going with a s2 rb25.its all running sweet.sorry i cant help ya.i tried everything but gave up in the end.

Unplugging tps does nothing

Black cas Look like standerd s2 injectors

Not too sure. The s2 loom plugs into it.have not tried unpluging it

Sure have

It has the black neo cas ! neo timing belt cover and a neo vct solinoid coil packs are neo and mounted like a neo with no brackets

problem putting neo in r33 s1 hi all i have dropped a neo into my r33 s1 but cant get it to fire compression is great engine cranks i have spark i can hear the fuel pump prime when i remove cas and spin it by hand i hear the injectors click i am using a s2 engine loom and tried multiple s1 and s2 ECUs i have swapped vct plug and repinned the cas plug in opposite order i bought the engine as a s2 rb25 but after closer inspection it seems to be a neo with a s2 intake manifold/throttle body/hot side. any1 got any ideas?