Rel3rd, hey I saw your post over on the turboforums and gave you a quick response regarding "fuel trim max " which is a possibility, also how much fuel was in your tank when you made your runs? Was your fuel pressure stable? Possibly could have uncovered the fuel pick up if you're tank isn't baffled especially if you ran it low to save weight..
Also have you messed with any of the accel pump settings? I haven't had to change a thing with the exception of fuel trim max...
- Have not messed with "Fuel Trim Max" at all.
- Over half tank in my TanksInc tank, which has a 1+ gallon built-in sump. Actually was playing around last night, with 1/4 tank or less and car pulled fine.
- I do not have an external fuel pressure gauge
- I also have not needed to touch the ACCEL PUMP settings, BUT....drove the car to work this morning, and noticed that I had a very pronounced DEAD SPOT with a quick throttle blip, BEFORE the engine was fully warmed up...Ambient temp was very low 60's here this morning.
I may try adjusting the ACCEL PUMP settings so they only affect the colder temps...and see what happens.
The 1st pass at the track, car launches fine, then about 100 feet or so out, noses over, and stays nosed over until I shift into 2nd, then pulls hard, through 2nd and 3rd...usually coolant temp is 150-ish
Next pass....pulls hard from launch to stripe...and repeats as many times as I choose to run it, even after a long cooldown, and if coolant drops to less than 150...which is why I am puzzled.
You can change the Target AF at idle, you properly around 13.8 and can go higher. Try 14.5-14.7 to start. Bob is much higher. You just have to adjust your IAC step again.
As far as throttle response try increasing the Acel pump setting at 170F, increase 10 at a time
Larry is correct. I have IDLE AFR set at 16:1, and it normally idles even leaner than that, even with 83 degrees of overlap in my camshaft, the "smell" is MUCH better. Ironically, my idle is much smoother, in gear, with the lean idle AFR.
My cams pretty lumpy 262/269 @ .050"
I can idle at 15:1 BUT I will never be able to get rid of the overlap of the cam.
It's much better but will never be perfect.
The carb would never idle in gear at that. AFR
It would just die when I put it in drive.
I agree, these things can't work magic, but they do a pretty good job.
Getting ready to dyno one of these next week, we will see................
Even though it's very hard to get any "learning" done on a dyno, I'm curious to see how this turns out. Mark, what combo are you trying one on?