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    Steady speeds don't have any knock counts. It'...

    Steady speeds don't have any knock counts. It' the long hard pulls up a hill in the 60-80 Kpa range that generates the knock counts. I'm trying to tune the truck for pulling trailers with 4 tons of...
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    As far as tuning spark advance, in a 28 minute...

    As far as tuning spark advance, in a 28 minute run with a good 4000+ rpm sprint, is a knock counter going to 255 twice a bad thing?
    I know less is better. The distributor is set for 0 with jump...
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    Done with VE now onto spark

    I'm done with VE tuning.
    What values should I put back in now that said "Off for BLM"?
    I was using $42-1227747-V5.1.xdf when I did the VE. I have since moved to $42-1227747-V5.9.3.xdf
    Does the...
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    Excellent! I work with excel a lot. I should...

    Excellent! I work with excel a lot. I should have looked at the cells. That was a DUH monument!
    Thanks, MarkJ
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    Dave, I like your spreadsheet. Where did you...

    Dave,

    I like your spreadsheet. Where did you get R-Map ( R-Kpa)and R-tach?(R-RPM) I don't have them as an export item.
    What I did do, is use your other spreadsheet that I used to make adjustments...
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    I have ran they VE spreadsheet at least 10 times....

    I have ran they VE spreadsheet at least 10 times. I gather data to and from work and then work the tables. every time the history looks like this:



    RPM/MAP
    20
    30
    40
    50
    60
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    Dave, With a data log like this (below) would...

    Dave,
    With a data log like this (below) would you drop the BPW to 138?


    RPM/MAP
    20
    30
    40
    50
    60
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    I have been tuning as before. Almost everything...

    I have been tuning as before. Almost everything seems to be on the low side after making the spreadsheet adjustments. I did notice that my BPW is still set @ 140. From what I have been reading and...
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    No Problem. You all share so much with the rest...

    No Problem.
    You all share so much with the rest of us on this site!
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    I finally got around making the adjustable TBI...

    I finally got around making the adjustable TBI pressure regulator. The original regulator was just over 9 PSI. The adjustable is now set at 11 PSI fuel pressure.
    I also checked for updates on...
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    I finally compared the air setting to the real...

    I finally compared the air setting to the real fuel. They were close but the pressure was about 3/4 of a pound off.
    I showed a little over 10 PSI on air with incoming air set at 24 psi. When I put...
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    Will do! After I get my replacement fuel lines.....

    Will do! After I get my replacement fuel lines..
    Thanks Dave and Mark.
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    OK guys, I finally got time to adjust my fuel...

    OK guys, I finally got time to adjust my fuel pressure. I modified the regulator and rebuilt the TBI.
    If the stock one was running at 12 psi and I raise the adjustable to 14 psi, do I need to change...
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    I did a little digging around. A friend of mine...

    I did a little digging around. A friend of mine that works on stock repairs said that one time he had a gauge on a TBI and pinched off the return line an saw the pressure go up to 30 PSI. So I tried...
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    TBI - bench adjust fuel pressure regulator?

    I saw that someone did a pre-setting of an adjustable fuel pressure regulator using an air compressor. The thread was called "Vacuum Adjustable TBI Fuel Pressure Regulator" that had a statement in...
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    35763577 Here is what I got after going back...

    35763577

    Here is what I got after going back to a smooth VE graph and setting Base Pulse Width to 140 and then making 2 runs and adjusting via Dave's spreadsheet. I thought it was interesting that...
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    Attached are my out come after setting BPW to...

    Attached are my out come after setting BPW to 145. This isafter making the adjustments to the VE1 from the spreadsheet with Historyaverage.
    I think I’m running out of fuel up in the 2400 area. I...
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    35493550 I think you are correct that it’s...

    35493550
    I think you are correct that it’s running out of fuel at the top end. I do not know what the fuel pressure is. What a PIA it is to get the fuel pressure on a 1990 K1500 350 TBI!
    I bought...
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    Here is what my History has been looking like. Of...

    Here is what my History has been looking like. Of course not all of the cells are filled in. The truck runs a whole lot better then it did with a stock chip burn.
    3548
    It looks like it's time to...
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    This is all great info for VE tuning! This is...

    This is all great info for VE tuning!
    This is almost worth putting in a place when people are first starting out.
    Thanks, MarkJ
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    VE BLM tuning via Dave’s spreadsheet

    I have followed the instructions in the 7747 ve1 + ve2 thread. I have run the history though the spreadsheet changes a lot of times. There are always differences. Anywhere from a BLM of 120 to 140....
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    No I don't have the HiWay Lean Cruise patch. I'm...

    No I don't have the HiWay Lean Cruise patch. I'm not really heading that direction with this truck. I'm working on towing power.
    I copied the 60 to 100 from he Bin you attached and to this post and...
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    Found the TCC lockup problem. I was also...

    Found the TCC lockup problem. I was also following the *Off for BLM* notations on the "Scalars". I disabled all that where noted with the *Off for BLM*.
    It turns out the "HiWay - Min Coolant"...
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    I'll take smaller steps this time. I will let you...

    I'll take smaller steps this time. I will let you know what I find. This could take the rest of the week for me due to my schedule.
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    I changed more than the spark table. I was still...

    I changed more than the spark table.
    I was still working with the scalars turning off the **Off for BLM** and **Read me Hack ** when I added the 60 to 100 section.
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