okay, so i get this 89 iroc-z (lb9/5speed) that been sitting since 2002 running after replacing the following:
injectors (now bosch 3's)
plugs
plug wires
cap
rotor
coil
maf
cts
fuel pump
fuel filter
o2 sensor

the TPS is fine and in adjustment
the iac is fine
the timing is spot on
the fuel pressure regulator is in great shape, looks like new
the ecm is flashing a code 33, both with the old and new mafs.
no vacuum leaks

it takes a long time cranking for it to want to fire off, and when it does fire, you have to hold the gas at ~2 grand. anymore, it'll die, any less, itll stall. when you do get it running, it makes lean pops threw the manifold sometimes, and after it warms up, it has like zero power under load.

need help asap. dont tell me to search, when theres 18 hours worth of reading and ever single thread tells me to replace everything ive just replaced, its not worth the time.

 

What size injectors did you get? Also, is it possible you mixed up the firing order when doing the plug wires? I would check out the code 33 too. Heres a link for you.

http://chevythunder.com/maf_code_33.htm

 

yellow top's from a 4.6l crown vic. ive checked the firing order like 18 times, and ive had other people check it at least 4, it 'should' be good' i just switched the maf relays around, and it fired right up, but wouldnt hold an idle. you would have to blip hte gas ever 2 seconds or so, it would go up to 1700 rpm, then slowly drop back to like 500 rpm, and try to die.

 

I would go through that diagnosis chart for the code 33 I sent in the link as that possible could be you stalling out problem.