Originally Posted by
32krazy!
try datalogging this way. forget about closed loop for now.
log afr, timing, rpm, engine load. from 2000 rpm in 3rd gear stand on the throttle and take it to redline , watching afr. if your not spiking this will allow the obdII to capture the data as fast as possible . remember rpm may not line up with timing etc due to sample rates. this is how you correctly log. the slow rpm start allows you to watch afr and back out if it goes big lean
if you want to log other parameters let it cool down and keep the samples to 4 or less parameters
I will do this in the next day or so. A 3rd gear pull is a little much for the traffic I have on the way home every day.
Originally Posted by
tunaglove
Jessie, it is curious that with your mods you would run rich while most folks have a lean issue. If you do not have obdii capability tied into your Zietronix setup, I would suggest buying an inexpensive scanner to check a few basic parameters. Using obdii instead of dedicated sensors will show you what the ecu is seeing. Looking at your ltfts would tell you if you have a faulty injector. Also a very low/high ect signal
I installed an ultragauge and so far the timing is negative from -35 to -15. It gets closer to 0 and even went over a couple times with WOT/open loop, but stays in the low negatives most of the time. The LTFT is showing 7 after driving for a total 3 hours.
Is this saying anything? I am thinking I have a leaking injector or it isn't atomizing like it should.