Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

All you tuning gurus inside please>have ?'s

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Old Nov 12, 2002 | 01:56 PM
  #1  
MattysTA's Avatar
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From: Jersey
All you tuning gurus inside please>have ?'s

well i just got a scanner module for my hypertech programmer. i figured its better than nothing untill i can buy a laptop and lt1 edit. i wrote down all the parameters in real time so they fluctuate a bit. but i would like to guys to tell me what you think so far. these figures are all at idle right now because its raining so i cant do any wot recording at the moment. but please voice your opinions. i will do wot recording once the weather lets up and ill post them here. thanks.....

engine rpms 670-701
spark: -18/20 btdc
injector pulse width bank 1 3.1-3.7ms
bank 2 3.0-3.9ms

short term fuel trim bank1 127-130
bank 2 127-130

long term fuel trim bank 1 139
bank 2 147

fuel trim cell 16

02 sensor bank 1 58-780 mv's ????
bank 1 #2 84-140mv's????

02 sensor b2 59-765mv's?????
b2#2 322-659mv's????

maf 6.0-6.9 grams per sec

closed loop
tp%0
tp volts 0.59
map .35 kpa
iac 41 counts
ect 182 degrees
iat 126 degrees while sitting at idle-went no lower than 80 degrees while going for a cruise in the neighborhood
engine load 2% a/f ratio 14.7
pc/dc 64%
pc/ac 1.10 amps
pc/rc 1.10 amps
tranz temp 157 degrees.

so what do you guys think? thanks for any info, ill be coming in here alot till i get used to all this lol

Last edited by MattysTA; Nov 12, 2002 at 02:00 PM.
Old Nov 12, 2002 | 11:26 PM
  #2  
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From: Phoenix, AZ
Do you have any particular issues you are trying to solve?
Old Nov 12, 2002 | 11:33 PM
  #3  
MattysTA's Avatar
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well something doesnt feel right the way shes running, ill know more as soon as i can do some wot logging. but does this stuff i have posted look normal to you?
Old Nov 13, 2002 | 12:39 AM
  #4  
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From: Vancouver BC, Canada
Your running lean based on the long term fuel trims... ie: above 128, perhaps an exhaust leak of some sort?

Sorry, can't really help other then that..

Jeff
Old Nov 13, 2002 | 01:22 AM
  #5  
MattysTA's Avatar
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i know there is a slight exhaust leak in the intermedeiate pipe, but i just put my headers on 2 weeks ago and so far so good. my 02 sensors mv are jumping up and down like crazy between those numbers, anyone have any helpful links so i can learn more about all this? thanks......
Old Nov 13, 2002 | 06:17 PM
  #6  
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From: Portland, OR
Originally posted by MattysTA
i my 02 sensors mv are jumping up and down like crazy between those numbers,......
That's normal, here's some links that I found helpful.

http://carprogrammer.com/Z28/PCM/
http://hometown.aol.com/protools4/linkss1.htm
http://magoo.noid.org/~lj
http://home.attbi.com/~kristenappel/binfiles/


Have fun.
Old Nov 13, 2002 | 11:38 PM
  #7  
MattysTA's Avatar
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From: Jersey
here is my WOT log

these are all at WOT, with hypertech engine tuning installed.
let me know what you guys think......


TP% 98-its at 87% with the key on and engine not running?
0 retard
spark-33-34
STFTB1 - 128
B2 - 128

LTFTB1 - 146
B2 - 144

02/1B1-784MV'S
2B1-839

02/1B2-776
2B2-831
FT CELL-15
A/FR-12.2
MAP-98KPA
MAF 191.3 G/S
Old Nov 14, 2002 | 12:19 AM
  #8  
MattysTA's Avatar
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From: Jersey
BTW, thanks for the links steve. there is alot of usefull info on those sites.
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