i dont have a lap top to check my blms so some help would be great, i just built a mild 350 and its running lean i think, thats what my pap said but hes never dealt with any computer controlled cars so idk, it wont idle either i have to pump the gas to get it started and stay on the gas or it wont idle, i deleted the air pump and egr from the computer, heres a little about my setup im using 24lb injectors, 74cc 1.94 1.50 heads, LS 112, intake and exhuast at 50 204, 214 intake and exhuast duration 262,272 2.77 rear gears, stock 4in bore, and speed pro dished pistons with 4 valve reliefs thanks for the help and plz dont tell me to read up because ive been reading and im eventually going to buy a laptop and cable, but i need a car so your guess is probably better than mine so thanks!!

 

ok, time to assume. I assume since you have 24 lb injectors that your running TPI. If you have to hold the throttle to keep it running maybe you could just pop out the plug and turn the idle screw up just a little, If the engine is running lean and you have an adjustable fuel psi regulator you could turn a little more pressure to it whick should give the engine a little more fuel.

Another thought, are you sure your TPS is set correctly? If its too low that alone will cause problems.

Since you have searched you must have read more than once something in the lines of "you need to be able to datalog to be able to see for sure whats going on".
With that being said, myself nor anyone else on this site will be responsible for any damage that may occur due to improper tuning.

Hope some of this helps