injectors plugged

I see no mention of a custom chip or tune yet you're attemting to run 42 lb injectors with nothing more than a recalibrated MAF sensor. The EEC has no clue what it should be doing with 42s or that they are even there.

did u change out the o rings on the injectors, could be leaking vacumm from there, mine had the same problem when i switched injectors

I've heard folks say that they've seen 42s run well with a calibrated meter and no tune but I've never seen one. Until I do, I'll consider that an internet myth. Here's why:

The EEC (regarless of the MAF calibration) is set for 19 lb injectors. Fuel tables, fuel ramps, injector break points, injector minimum and maximums, along with spark tables that coincide with the amount of fuel the EEC "thinks" it's sending, will all be wrong. The EEc can do a reasonable job of compensating for 24s over a period of time, but once you start getting into injectors over 30lb then you're outside of the EEC's ability to apply adaptive control. 20% out of the norm is the rule of thumb for adaptive control to be able to do it's job (That a 22lb injector at stock fuel pressure if you're keeping track). The saving grace for injectors that are smaller than 42 are those breakpoints and mins and maxes that I mentioned before. They're not nearly as far away from those of the 19s as they are for the 42s (obviously). So even if the EEC knew what the minimum pulse width was for a 42 (which is allot lower electrically than it is for a 19) it would still be all haywire when you stepped ont eh gas (a 42 will dump allot more gas than a 19 will in considerably less time). Does that help?

BTW: I saw a PMS for sale for $600 someplace. I'll PM you the link.

NP... check out the forums for the Anderson PMS and TwEECer to get a better idea of what each can do for you. Since you aren't going to need to load MAF tansfer function (your MAF is already cal'd for 42s) and the PMS is tons easier to learn and operate, I figured it might be a good thing for you to have if you're not interested in the custom chip route.

first off dump codes... confirm timing(y only 10 degrees??) then hunt down ecu gremlins.Ive heard of 42lbers runing in cars but it runs like crap. very rich but still ran good enough to go do what had to be done..
how many lbs of boost is that s trim set up for ne thing after 9 lbs you need a bov/by pass valve for it to idle right . also i would unplug the iac and try to set the idle manualy. ive also heard people having to drill a hole or bigger hole in there butterflyh of there tb..good luck