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  1. I thought I had those disabled. I will go back on...

    I thought I had those disabled. I will go back on look. I will also try and see if closed loop works off idle.
  2. I started over with a fresh bin, which fixed a...

    I started over with a fresh bin, which fixed a few of the goofy issues I was seeing. I also watched the Idle flag and it seem to be working correctly. So, it looks like I am moving into the off idle...
  3. Thanks. It needs a lot of tuning. Turns out this...

    Thanks. It needs a lot of tuning. Turns out this engine has pretty low vacuum. It idles at like 60-65 KPA. I have been wondering if there is a way to know for sure which VE and Timing table you are...
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    Yes I did. Its Turbo Charged now, so its a whole...

    Yes I did. Its Turbo Charged now, so its a whole different animal.
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    Yes Sir!

    Yes Sir!
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    You could also download some stock LT1 Corvette...

    You could also download some stock LT1 Corvette and Camaro bins. Compare the transmission shift points to yours. The old LT1 Corvettes had some pretty aggressive transmission shift points. Even more...
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    Timing can also have an effect on your PE AFR....

    Timing can also have an effect on your PE AFR. What does your timing look like? If you adjust your VE table till you read your commanded PE AFR then your tune would be correct. You could fudge the...
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    Change TPS to enable kickdown mode to about 80%...

    Change TPS to enable kickdown mode to about 80% and Change TPS to disable kickdown mode to 70-75%. Moving them down more will cause it to downshift even earlier.
  9. New project Corvair rail buggy, TBI, $0d, 7427

    Hi guys, helping a buddy install a TBI on his corvair rail buggy. This buggy has been built longer than I have been alive. Until recently he flipped it and had to totally redo the roof of the buggy....
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    :rockon: Good deal.

    :rockon: Good deal.
  11. I just watched my datalog again and noticed a few...

    I just watched my datalog again and noticed a few things, for one the battery voltage the PCM is seeing is showing 10.4 to 11 VDC. Also my desired AFR is showing 11 as well. Ever since converting to...
  12. I may give it another shot when I can come up...

    I may give it another shot when I can come up with a good game plan on getting them tuned. I have been looking through a lot of bins to see the differences in the 02 correction tables. They seem to...
  13. No, I did not try that. I would like to keep...

    No, I did not try that. I would like to keep closed loop tuning for better gas mileage if possible. Its weird because the tunes are pretty much identical other than the size of the injectors, short...
  14. Well I gave up and put the old injectors back in....

    Well I gave up and put the old injectors back in. I lowered the proportional gain to where the 02 sensor would not even swing anymore. That was really about the only way I could get rid of the surge....
  15. Ahhh...proportional fueling...duh. I guess I was...

    Ahhh...proportional fueling...duh. I guess I was suspecting something else due to it idling good and only having the issue while driving. I will play around with those tables and see what happens.
  16. Tuning large injectors, Siemens Deka 80 lb, 7427 $0E, Turbo 383 MPFI

    Hi guys, some of you may have seen my MPFI turbo 383 build where I am using the stock 7427 and a 2 BAR MAP sensor in my 94 Blazer. The truck has been tuned and running great for over a year, other...
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    look up the dual feed mod for the 400/4L80E. That...

    look up the dual feed mod for the 400/4L80E. That will firm up your 2-3 shift. I did this to mine and my 2-3 is the firmest shift I have. I also removed the cushion spring in the direct clutch and...
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    http://i105.photobucket.com/albums/m232/tapyz250/C...

    http://i105.photobucket.com/albums/m232/tapyz250/Convert%20Boat%20to%20EFI/CIMG1696.jpg

    http://i105.photobucket.com/albums/m232/tapyz250/Convert%20Boat%20to%20EFI/CIMG1439.jpg
    ...
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    I have seen those, don't remember them being...

    I have seen those, don't remember them being around when I did mine years ago.

    My new boat has a TBI 350 in it stock, will do 55 MPH, and pulls anything I want behind it. I am leaving it...
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    I guess that would be considered torque...

    I guess that would be considered torque management? I knew these PCM's had some early forms of TM in then. My XDF only has one scaler for this and its zeroed out.

    This is causing some spark knock...
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    Ok, I will check it out. I compared a 454 $0E and...

    Ok, I will check it out. I compared a 454 $0E and the 350 $0E that I am using. The 454 bin did not have any governor setting set, all zeroed out.
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    $0D and $0E Governor Parameters

    Since I put my 80E in, I am getting a weird shift from 1st to 2nd. It feels like the truck stalls for a split second before shifting. looking at the data log and that's Just what it shows. For some...
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    This gets tricky because you will need a way to...

    This gets tricky because you will need a way to tune fueling. You would need to put it on an engine dyno, or be really good at reading plugs. What year truck?
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    All the 94 S-10 and Astro's I have pulled PCM's...

    All the 94 S-10 and Astro's I have pulled PCM's from have all been $0D.
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    I have it fixed, I sat for hours going through...

    I have it fixed, I sat for hours going through both bins, $0E and $0D. The parameter that I think fixed it was "Number of counts to run Flag" $0E bin was 2, my old $0D bin was 6. Also "Number of DRP...
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