Improvements!
02-16-2005, 11:45 AM
#1
Improvements! I think I am very close to my 2001 Camaro SS being optimized as much as possible in the LTFTs. My wife and I have notice that the car responds a lot better than before ... even our mechanic friend that test drove it noticed "it runs a heck of a lot better".I think I will start tuning the STFT now. Below is my progress of my tuning, I have the LTFT & STFT of the OE tune vs my current results. The car only has Hooker LTs & ORY as the major A/F mod, as well as Throttle Body Bypass and Ported/Polished Throttle Body. State your opinion if so desired. 
OE STFT average results
Tuning STFT average results
OE LTFT average results
Tuning LTFT average results
OE STFT average results
Tuning STFT average results
OE LTFT average results
Tuning LTFT average results
02-16-2005, 04:42 PM
#3
Your bottom LTFT hist is nice, but shouldnt you be shooting for slightly negative numbers that way fuel is not added if you slam the pedal and put her in PE? I typically shoot for -4 across the board. Its a little more difficult since you cant use the special paste functions. Also, what do you mean tune for STFT? STFTs and LTFTs go hand in hand... i dont think you can tune for one and not the other. Pleas school me if im incorrect here.
-T
-T
02-16-2005, 04:54 PM
#4
Thanks HumpinSS
Ideally, you want the LTFT to be as close to 0 as possible. A -4 indicates that you are running a smidge rich, I prefer running either -2 upto 0. The lower and higher load values (MAF -30Kpa or +70Kpa) are not that important to me, since I rarely am in that rpm band during part throttle driving.
For tuning STFT, I will have to disable the LTFT learning process, so the VCM will only use STFT values to correct the A/F, then I can directly edit the VE table based on the variance the STFT table has from 0.
BTW, I am using HPTuners Version 1.6.2.
Ideally, you want the LTFT to be as close to 0 as possible. A -4 indicates that you are running a smidge rich, I prefer running either -2 upto 0. The lower and higher load values (MAF -30Kpa or +70Kpa) are not that important to me, since I rarely am in that rpm band during part throttle driving.
For tuning STFT, I will have to disable the LTFT learning process, so the VCM will only use STFT values to correct the A/F, then I can directly edit the VE table based on the variance the STFT table has from 0.
BTW, I am using HPTuners Version 1.6.2.
02-17-2005, 06:48 PM
#5
Launching!
Join Date: Nov 2002
Location: Miami
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Originally Posted by Flame Throwing SS
Thanks HumpinSS
Ideally, you want the LTFT to be as close to 0 as possible. A -4 indicates that you are running a smidge rich, I prefer running either -2 upto 0. The lower and higher load values (MAF -30Kpa or +70Kpa) are not that important to me, since I rarely am in that rpm band during part throttle driving.
For tuning STFT, I will have to disable the LTFT learning process, so the VCM will only use STFT values to correct the A/F, then I can directly edit the VE table based on the variance the STFT table has from 0.
BTW, I am using HPTuners Version 1.6.2.
Ideally, you want the LTFT to be as close to 0 as possible. A -4 indicates that you are running a smidge rich, I prefer running either -2 upto 0. The lower and higher load values (MAF -30Kpa or +70Kpa) are not that important to me, since I rarely am in that rpm band during part throttle driving.
For tuning STFT, I will have to disable the LTFT learning process, so the VCM will only use STFT values to correct the A/F, then I can directly edit the VE table based on the variance the STFT table has from 0.
BTW, I am using HPTuners Version 1.6.2.
02-17-2005, 10:50 PM
#7
Originally Posted by Magyver
Does 1.4 have the ability to disable the LTFT learning process?
Originally Posted by Turo
nice histogram, wish mine looked like that! is this with or without maf?
