AEM 300 tuning drifting and bottles of Tylenol.
i'm trying to tune my VVE table on my gen 4 ly5 2008 sierra. I've tried X by % half. Small increments in zone by zone only, smoothing , etc...etc..., but I'm starting to get a little frustrated. My issue. I believe, might be with my aem wideband . I recently bought the unit. I welded the bung at the 10 o'clock position right before the Cat. Every time I start the truck it's rich. About -5% on average, in gear. in the cell where it idles ( my reference point). But the idle area I feel it's tuned right where I want it. Let me explain. I start my truck and then I have to go for a warm up drive. I usually have to drive around 25-30 minutes and then I see my values start to change. On my idle in gear I scrap the numbers since I know it's not correct from where I first cranked it and restart the scanner software. By this time....my idle is about .98 lambda ,so I know I"m in the ballpark of where I wanna be. Sometimes I restart the scanner like three times depending how long I'm driving .Each time the values slowly start coming into where I want. The problem(s) I'm having is... no two drives are the same. Even though I do the same route under the same conditions. Acceleration, gear selection. and everything in between.
Do these aem 300 drift that much or should I say.... are they that flaky where you might have to drive for about 30 minutes before you think about logging? I can't start logging from the start because the numbers would be so off.....that I would take like a 3 hr drive for the averages to finally drift. Could there possibly be an issue with my aem sniffer or this is something common , being that its not the most expensive in the market? It's driving me crazy that I continue to massage the numbers , sometimes by the valve of +/-10 in certain areas( a zone ) just to bring it closer and I feel I should get the right readings and I go for a drive and it's like WTF! I also print the numbers before I do the " cal coefficient" to verify the surrounding areas and to see how much they might of changed and after like 40 minutes of driving...I'm off. Tonight I drove after a tweak...I printed out my table and compared it to my previous save file. The area has a lower value, but's it's richer. i'm thinking i didn't let the damn sniffer settle long enough. But then again.....could the sniffer just be FCUKED and it's giving me problems, eventough it's new?
:banghead::banghead::banghead::banghead: