sr20 help

[sr20jeff]

Been having an issue after swapping my intake manifold on my Sr20det...the car idles but with a slight miss will rev to redline sitting still but while driving under a load it begins to miss badly always near boost..and won't rev past 3500 when that takes place...almost feels like its loading up...any ideas? Any help would be appreciated..trying to get her running for the warm weather

[s13drifter88]

maf wiring/condition? plug gap? fuel pump & filter? fuel pressure? timing?
Maf = check voltage on 12v supply, check voltage on 5v signal (should fluctuate with increased load/throttle), check ground for maf, add additional ground from pigtail ground to engine block (maf wiring should be properly soldered).
Gap = .030"
Pump/Filter = Walbro/Q45/Z32tt
Pressure = 43.5psi (I think, please correct if wrong) with engine running, vacuum hose to fpr disconnected
Timing = 15*

[sr20jeff]

Thanx ill check all of those in the morning..greatly appreciated

[s13drifter88]

check resistance on your injectors too. i was dropping an injector in my CA one time. it would rev out in neutral but under load it would cut out. for SR they should ohm out between 10-14ohms since theyre high impedence. if resistance is high the coil is going to be getting hot and it will stop firing. shouldnt be below tho. below would be a closed circuit and would cause poor idle due to the injector staying open and causing a rich condition when not under load, opposite of your prob. check all these things over (replace for items needed) that ive listed as its a good idea to do so while performing any swap anyways to ensure optimal performance and trouble free operation.