soundengineer

iTrader: (16)

two buttons over from the export log icon that you used to get a csv file...theres a little floppy disk looking symbol...
hit it, and save the file


or..in the file menu.. under "scan"
it says "Save Data As"


then post the file

fst100

iTrader: (5)

ok....i figured but wanted to make certain. i'll get a scan log tomorrow....please stay tuned :-) thanks again.....could it also be a hardware issue? ie-plugs/plug wires/one of the O2 wires/something that would prohibit it to get into PE mode?

soundengineer

iTrader: (16)

not directly sort of... but a hardware issue could cause you to not be able to meet conditions to get to the proper TPS/RPM/MAP/ECT to get into PE...

fst100

iTrader: (5)

for FWIW, the code comes on if im fully flooring the car for a few seconds(guess when theres enough data the ecm gets then hits limp mode) but when i hit a steady pedal of like 75 or 80% it still stays in closed loop even though PE mode should of came on well before at like 55%.

edit-and i sprayed carb/choke around the areas in the engine bay for vac leaks but the motor never stumbled

qqwqeqwrqwqtq

I know it throws a code but I don't assume anything which is why I mentioned it.

soundengineer

iTrader: (16)

ok.. looking thru the CSV as best as I can.......and looking at the data in a way that I can tell which values belong to which cells using a shift and split method of viewing...

you are just lean as hell...its a lean stumble/stutter...
narrowband fuel trims are all way positive..which means its trying to add a bunch of fuel
then when you go WOT, O2 mv drop way low..now, we cant tell exactly what air fuel you are at because narrowbands are only good at 14.7..
and anything leaner can be represented by by any mv value less than 450ish...

looking at yoru tune, your MAF table is lower than stock.. try putting it back to a stock table...you need more fuel everywhere anyways.. so the MAF table needs to be higher.

start with that.. see if t helps...
then get a wideband in the exhaust and log it in hp tuners...
you cant tune WOT without a wideband...period.

soundengineer

iTrader: (16)

according to your HPT Csv data.. its going into PE just fine...
whatever you are looking at that is telling you it isnt....is obviously wrong..

fst100

iTrader: (5)

the maf table is actually increased alot over stock...prolly 2% overall...
heres my stock hpt for reference.

fst100

iTrader: (5)

actually more than 2%...alot....before my LTFTs were constant +25 STFT +16.4....now the 2K-6K is at minimal +5

soundengineer

iTrader: (16)

oh..and parsing thru csv data reminds me of the days of LS1 Edit, and why I helped with design and development of the HPT scanner in the early days... I forgot what a pain in the *** it is to look at excel files for tuning...hahaha

soundengineer

iTrader: (16)

I was looking at a stock file I had here on my computer at the moment....
maybe I was thinking backwards there...
either way... your CSV shows you need more fuel according to the narrowband o2's reaction...how much? I cant tell you without a wideband...

fst100

iTrader: (5)

im debating on trying to find a 98 ecm but long as its for the 5.7 and a 98 ecm it'll work with the harness for the car right? this freaking sucks...

edit-can u send me the cvs file you corrected by chance please?

soundengineer

iTrader: (16)

I didnt do any corrections to it...
I just used a viewing method in excel that uses a split in the screen and I visually shifted things so I could read them...kept the column labels in the top split, an just scrolled right or left when I needed to to keep it in line.


and its a CSV file
Comma Seperated Values...
not cvs.. thats a pharmacy store..LOL

soundengineer

iTrader: (16)

and why are you wanting a new pcm... theres no problem with your PCM..
its just a tuning issue...
get a wideband
add fuel to the MAF table

tune your VE table in Speed Density for closed loop
then tune it with the MAF enabled...
(the pcm blends between the two at part throttle based on TPS, throttle change, and several other variables...)
this alone is probably skewing your results....you cant just add to the MAF and watch fuel trims... they will never be consistent as the VE is blended in with it and needs to be tuned first before you can even consider the MAF...
then the MAF needs to be given 100% control by changing some other variables in the tune, then both fine tunes together at once....

tuning is not a simple process..

fst100

iTrader: (5)

fwiw, the code and fuel trims were present when i gotten the car. should i just reflash a new bin file and start from scratch? i have a wb just not hooked up yet as im getting headers this weekend. dunno when i'll be installing the headers once they're on then the wb will get installed. gotta read up on ve and SD tune. never did that before in my wbody-tuned for OL only.

soundengineer

iTrader: (16)

is this a daily driver, only car you have?

if not... then just wait till you put your headers in, put in the wideband, and start tuning...
its not worth worrying over at the moment if its going to change in a few days anyways

and with the headers...its gonna want more fuel...LOL

theres no reason to start with a completely new stock file...nothing in your tune is way out of whack...I'd reconsider your PE EQ values...but that is an easy fix...

you just need to get the fueling sorted out....

fst100

iTrader: (5)

its not my DD but this issue is so troublesome it bothers me alot. i want to be able to run this come track day to see what it runs stock minus the tune then the headers/ls6 intake and retune is done then hit the track again for comparison.

soundengineer

iTrader: (16)

throw some fuel at it tomorrow...see if it changes...
Like 8-10% more...

fst100

iTrader: (5)

will do. i also found out my COT was enabled. grant it still has stock cats but the afr was set in that table at 11.77 which was what the limp mode was commanding when it occurred, i also lowered my PE enable to 30% for ***** and giggles as well as zeroed out the PE enable section.

see bin attachment.....im going to bed now
keep u posted and thanks man

soundengineer

iTrader: (16)

UGH....dont lower the PE enable TPS to 30%... its pointless...
I already told you that according to the data you posted,....its gong into PE mode just fine...