I was having the same problem with my tempo settup when i first started it up a wile back. My dads house is on the side of a large hill, and i could barrly get it out of our driveway. It would go WAY lean whenever any kind of load was put on the engine. It also would not accel for crap. After looking everywhere for problems, and tuning the
HELL out of the VE tables, i figured out why the VE tables cameout looking so funky (which is why i have not posted up anything yet on this thread)
Long story short, i switched to using high impidance for my injector circut.
Quick description of the two methods of controlling the injector:
1. low-impidance... just wire up the injector to the MS with a + and - ... The MS then uses what is called PulseWidthModulation (PWM) to keep the injector from overheating. What it does is... to open the injecor it pulses full voltage to get it open, then it blips the voltage to keep it open wile it injects the fuel (also known as peek and hold) I was having trouble with this, mainly because i am using a MS1 and i didnt do any extra modifications to the mainboard (all kinds of difficulties that i could not get by). If anyone desided to go this rought, i highly recomend getting a MS2 mainboard if you are going to use PWM. PWM is a nice thing to have, but i just could not get it to work with my MS1.
2. High-impidance... just wire up the injector to the MS with a + and - ... but this time have a single resistor in series (right in-line) with the injector. With this resistor, you can have the MS just apply %100 voltage to the injector all the time, no PWM at all. This change has fixed 99.9% of my problems. The only down side to this is that it slightly increases the opening time of the injector. The resistor value i am using is 8ohms, and make sure you get at least 15watt resistor.
...So i just got done driving my falcon today... I reset the code back to its original state (the one i made before i even started up the car for the first time) exept this time i was running high-impidance. Last time i could not get it out of the driveway, this time i was driving up and down large hills with no problems, and i did not even touch the computer. Amazingly it a very close tune. I did not go above 15% throttle yet though, as i was driving the car and could not change the VE tables as i was driving. It stayed on the rich side the whole time however.
Things to do now:
I have developed a TPS problem after taking off my throttlebody to change out my throttle cam, need to fix this.
tune the VE tables, although they are not too far off already.
Tune the Accel Enrichment, the slow speed AE is good, but the fast speed AE needs to be a bit richer.
So thats where im at now
lol im actually extremely happy right now at how my well my falcon drove today, on an untuned program! woohoo! Its going to be a walk in the part from here on.