AngryFloppy

You said you have stock injectors on the car. Injectors "dump" a certain amount of fuel depending on engine load. Stock injectors can only do so much as far as fuel delivery. When you try to put to much pressure to them they end up reaching a point called static. There's no more pulse recognition and you end up getting a crappy spray and thus making it difficult to mix your air and fuel in your combustion chamber. You should look at what some other people have put there fuel pressure to with the mods you have. And remember your fuel lines can only push so much fuel as well. So even if you have a big pump, big injectors, big rails, and a regulator, your lines will still be a restriction

F5GTS331

does the exhaust burn youre eyes when its at an idle if youre standing around it?

F5GTS331

well for starters check you tps voltage it should be about 1 volt. maybe it could be the iac. is the check engine light not comin on? if so if ya got a buddy with a code reader it would help you a bunch. really with those upgrades you shouldnt have to change you idle unless that new tbody is set to low. you should have your timing in the neighborhood of 12 or 13 degrees btdc your fuel pressure shouldnt have to be changed that much, it will make it idle higher if its turned up to much but dont think 5 psi would make an idle diff. not in my experiences anyways. thats about all i can think of right now but my advise i sto not worry about it to much and just fiddle with it , youll get it figured out.