Hello Everyone,
I have been away from tuning for quite sometime! I sold my TA back in 2012, but I have a friend with a Camaro asking me to do some tuning. Since i was pretty involved, i said yes. Fast forward today, and now we have this badass Calc.VET tuning! Pretty impressive and really neat if you ask me. I set everything up, but i got some results that I am a little confused on, so here is the following setup:
2002 Camaro Auto
Completely Stock, except Lid, Kooks long tube headers with Kooks dual 3" exhaust, and removed Air Pump assembly. This includes a completely stock tune file.
Has front O2's installed and MAF (as opposed to the OL-SD I used to tune), so I am doing the Calc.VET tuning instead of autoVE
What is confusing me, is the following:
I got my calc.pid setup for use with the AEM wideband setup, but the wideband is currently NOT installed. I went ahead and did a run anyway to log at least the non-PE portion of the VE table (<50% throttle) and MAF just to see how it works. What was surprising to me is after logging a run, the VE figures actually went down in the lower RPM bands compared to stock (i didn't get enough logged for upper rpm >2,400 rpm). I figured that with the addition of the kooks headers/dual exhaust, that they would actually be up. Additionally, the fueling (from what I saw on the trims) was +6% on average (according to the log file). So, I'm just wondering if because of the way I have it setup if it is not working correctly. Would it not work because of the following:
1) Not having my Wideband hooked up to give actual readings? Would this cause some sort of mistake in the formula for anything below PE mode?
2) I am using the AEM wideband (http://www.aemelectronics.com/Images...%2030-4100.pdf), and the instructions are not VERY clear as to what it considers "stoich", could a difference between 14.65 and 14.7 have a significant impact? Does Stoich on B3601 being the stock 14.63 value somehow mess up calculations if compared to the AEM wideband stoich of 14.65/14.7?
3) Am I somehow not using the correct PIDs? (I have attached my PID file for your review AND calc_pid.txt file)
4) Have I somehow used the incorrect data for the adjustments on my MAPs in EFILive Scan? I have attached my log file. My VE table Map used Calc.VET (%) data from "Calculated VE, BEN corrected (%)" and my MAF table used data from Calc.SELBEN from "BEN selected from LTFT or WB (factor)".
If someone sees anything funky, please let me know! If I am doing everything correctly and I should just carry-on, tell me that too, ha. I suppose I was just not expecting lower VE figures from those changes in the lower rpms.
Thanks a lot,
Haans249
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