winaldl question
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Senior Member
Joined: Nov 2000
Posts: 542
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From: Alburnett,Iowa,USA
Car: 92RS
Engine: 357
Transmission: 700R4
winaldl question
There are several blm tables in winaldl (wide average,narrow av, narrow latest, etc.) I have read the discriptions but dont know which chart to start with. I have made some major changes so things were way off to start with. I have made progress with about 3 burns, part throtle and high way speeds are fair. Would like to know how to get the most out of the blm tables and which to use for fine tuning.
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Joined: Oct 1999
Posts: 6,621
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
My method; Drive the car around until up to normal (and constant) temp, clear the BLM table and INT table so they start from scratch. Drive around with a slow right foot so as not to go into PE mode, don't use overdrive so as to fill as many "cells" as possible. After you've driven around and have about 10 samples for as many cells possible in the wide average/latest (not narrow). Go to diy-efi.org and go to the incoming folder in the ftp server (there's a link). Download the winaldlvefixer.xls I believe is the filename!??!?!? Open it up, copy/paste the logged wide average BLM table into the excel file (there are directions as to where to do this), copy and paste your current VE #1 table and the file has a page to do some calculations and then the #4 page has the new VE values to try out.
If your calibration is way off but you think you can still fix it with just VE table changes (no need to adjust actual fuel pressure or inj. constant, aka BPW in Tunercat), try setting your test bin file with a BLM min value of 60 in place of the 108. This will help speed up the tuning of the VE table and to be honest, I have NO clue why there is an actual min value for BLM. Wouldn't you want the computer to correct as far as possible if you're seriously way off calibration (think about setting min/max BLM from 0 to 255, not sure of ill effects but seems logical).
Anyways, back on about the VE tuning. When you get the BLMs to within the 124-130 range you want to drive the car around and try and capture as many samples in the narrow aver/latest as possible. This is the slightly more accurate way of fine tuning. Use the excel file again and you're shooting for BLMs in the range of 127 to 129, maybe looser, depends on a lot of things. Next to be even finer you'll want to lock the BLMs (set min and max both to 128) and tune by the INT table or o2 voltage.
That's my method and trust me, it works. Too bad I make a few timing adjustments or modify some other table and the BLMs get all FUBAR. I'm at the point right now where I'll get the BLMs solid, make an adjustment in timing and the BLMs will show too rich. I have a feeling that this is a sign of not enough timing, hence a better and more complete burn of the fuel would show a lean (if anything) at the ecm. What it boils down to is give the car what it wants, I'm slowely adapting to Grumpy's state of mind about tuning. Too much math and you get slower....give the motor what it wants (not what you think it needs) and you're good to go.
If your calibration is way off but you think you can still fix it with just VE table changes (no need to adjust actual fuel pressure or inj. constant, aka BPW in Tunercat), try setting your test bin file with a BLM min value of 60 in place of the 108. This will help speed up the tuning of the VE table and to be honest, I have NO clue why there is an actual min value for BLM. Wouldn't you want the computer to correct as far as possible if you're seriously way off calibration (think about setting min/max BLM from 0 to 255, not sure of ill effects but seems logical).
Anyways, back on about the VE tuning. When you get the BLMs to within the 124-130 range you want to drive the car around and try and capture as many samples in the narrow aver/latest as possible. This is the slightly more accurate way of fine tuning. Use the excel file again and you're shooting for BLMs in the range of 127 to 129, maybe looser, depends on a lot of things. Next to be even finer you'll want to lock the BLMs (set min and max both to 128) and tune by the INT table or o2 voltage.
That's my method and trust me, it works. Too bad I make a few timing adjustments or modify some other table and the BLMs get all FUBAR. I'm at the point right now where I'll get the BLMs solid, make an adjustment in timing and the BLMs will show too rich. I have a feeling that this is a sign of not enough timing, hence a better and more complete burn of the fuel would show a lean (if anything) at the ecm. What it boils down to is give the car what it wants, I'm slowely adapting to Grumpy's state of mind about tuning. Too much math and you get slower....give the motor what it wants (not what you think it needs) and you're good to go.
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