Long story short, my VE table has what I call a sharkfin. A huge ridge right down the 2000 rpm column. This was tuned with a wideband, and my fuel trims pretty much agree with it....truck runs fine except for this damn lean then rich spike around 75KPA no matter what rpm or throttle position.
Does this look normal? Table is pretty smooth except for this ridge.
ridge.gif
are you trying to run this in speed density open loop ..or with mass air flow ..i ask because it is setup to go in closed loop but the maf hz set to zero in the tune but enabled in the dtc hth
The tune I posted is speed density closed loop. I tuned it in full open loop with a wideband.
Where do you live that you are hitting 105kPa? I have trouble on the best day hitting 90(80-85 max where I live in the mountains) lol
To answer your question, it does not look normal. Got vtec bro???
Something is wrong if you're getting a lean then rich spike. That might have a lot to do with it.
Looks OK to me. The highest numbers appear around peak torque.
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
Originally Posted by PICNIC_GEORGE
I live at sea level, and see 105 with KOEO. WOT I see right at 100.
Reply With Quote