View Full Version : Running OL only, more power


91chevZ71
07-06-2007, 06:00 PM
Way stronger with Open Loop only...
reduced AE more, better throttle response and engine sounds better.
My VE table has changed with the wideband, it is definitely closer now. I haven't tried to run closed loop with the new VE table, but I'm about to try it out. Should be better...??
I haven't relocated my IAT to the manifold yet, either. I'll try that after running closed loop for a while and seeing how it runs.
I guess this is just a play by play post of what I'm doing today...

MIke

91chevZ71
07-06-2007, 06:24 PM
OK
now the INT voltages are too low for the target AFR of 14.3 (I think)
I've raised my INT Lean,Rich and Mean R/L tables by 50 mv.
test run now

well, that sucked
NB O2 wants to keep pulling fuel, even with changing the rich/lean values and changing target AFR to a lower AFR.

now I'm gonna try another open loop cruise to make sure the VE table is right

91chevZ71
07-06-2007, 07:14 PM
Well, my VE table is pretty darn close, WB says 14.3-14.9 ranging from 40 mph, highway, hard accel, soft accel.
I think I'll try to run the WB into the computer for the NB input and see what happens. Maybe another day...
GOnna try moving the IAT to the manifold and see what happens.
Gonna run open loop for now

I changed all the O2 stuff back to stock, and the NB disagrees with the WB still. weird

-well, I'm gonna hold off the IAT stuff since my AFR's are pretty close but this closed loop crap is pissing me off.
what would cause the NB to disagree with the WB? I know the WB is more accurate across the board...
it's weird watching the INT drop and BLM hover around 120 when the WB reads 15.2-15.6. ALso, there is a noticeable loss of power when running C/L as opposed to O/L

got a FP relay bad code...easy fix thankfully