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  1. Thread: AFR ?

    by mike454
    Replies
    16
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    25,624

    ok, I swapped out the pump I went with the...

    ok, I swapped out the pump
    I went with the vortec pump,regulated to 14 psi.
    definitely much better....afr stays in the low 15's now.
    I will do another log, now that I have the emulator up and...
  2. Thread: AFR ?

    by mike454
    Replies
    16
    Views
    25,624

    donf, yes I agree on the difference I didn't like...

    donf, yes I agree on the difference I didn't like it would only deadhead at 16 psi too.
    Im thinking im gonna change the pump anyway, but I don't think thats causing my problem.
    while attempting to...
  3. Thread: AFR ?

    by mike454
    Replies
    16
    Views
    25,624

    ok, the fuel pressure increase helped the...

    ok,
    the fuel pressure increase helped the overall lean condition,WBO now doesn't get into the 16.00 AFR now stays around hi 15's
    going by the logs what is the easiest/safest way to richen the fuel...
  4. Thread: AFR ?

    by mike454
    Replies
    16
    Views
    25,624

    dead headed at 16 psi. Volume 2.35 quarts per...

    dead headed at 16 psi.
    Volume 2.35 quarts per min.
    pump seems to check out good.

    raising the fuel pressure helped it some
  5. Thread: AFR ?

    by mike454
    Replies
    16
    Views
    25,624

    its a new (has 5000mi on it) airtex for the 93...

    its a new (has 5000mi on it) airtex for the 93 truck
    if i'd been in on that i wouldve had them get the 94/95 model to get the higher pressure
    i will deadhead it while ive got the gauge hooked up
  6. Thread: AFR ?

    by mike454
    Replies
    16
    Views
    25,624

    ok, i modified the FPR to make it adjustable......

    ok, i modified the FPR to make it adjustable... got the fuel pressure set to 14 psi,it will go to 16 max with the screw i used.
    that brought the afr down some overall,and runs better... I havnt...
  7. Thread: AFR ?

    by mike454
    Replies
    16
    Views
    25,624

    yes I had ran into that before on the fuel...

    yes I had ran into that before on the fuel pressure too. I will get it up to 13 and double ck my gauge, its an older Mac but on low pressure a lb or 2 either way wouldn't help.

    I talked to the...
  8. Thread: AFR ?

    by mike454
    Replies
    16
    Views
    25,624

    AFR ?

    I have a 1993 Chevy Truck 3500 4 door ramp truck that I just acquired, it has a 7.4 4l80e 16147060 BAMP

    The previous owner said it had always, since day1, had problems with turning the exhaust...
  9. Replies
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    160,274

    hello rsicard, Did you finish the tune on the...

    hello rsicard,
    Did you finish the tune on the mpfi big block? Just wondering how it turned out.
    Did you do the conversion on the ecm? Did you end up doing the jumper mod, or the sense resistor mod?...
  10. Thank you In-Tech. As I learn more,i do have a...

    Thank you In-Tech.
    As I learn more,i do have a 91 1500 that I put all the 454ss running gears in that was wrecked.
    It has Edelbrock heads and the rest of the Edelbrock” mpfi kit” on it.
    I read...
  11. hey guys' need help picking a stock .bin for my truck

    its a 1993 3500 Chevrolet 4 door 2wd 16147060 bamp was the stock .bin and it was terrible,wouldnt pull itself..

    truck won't be towing anything other than maybe a car trailer with a nomad on it..
    ...
  12. on the upsidedown pics.....just edit the...

    on the upsidedown pics.....just edit the photo,rotate it till its rightside up and then save it,Then send it/attach it.

    I used to have the same issue with my iphone/mac,when i first switched.
  13. oh yea defiantly,i knew the Edelbrock kit was a...

    oh yea defiantly,i knew the Edelbrock kit was a bit of a rube goldburg apparatus,considering it was designed to run tbi not mpfi. I didn't think a couple wire and a chip tune would/could do a whole...
  14. maybe

    well I set it to 27fs512(read only) and it read it..

    can one of u guys look at it and see if looks like it read it right?
    thanks
    mike454
  15. yes thanks In-tech.... autofill gets me all the...

    yes thanks In-tech....
    autofill gets me all the time.
    I did see that it was kb after the fact.
    ok cool, like you said im sure I just read the wrong area.

    its a lot for a newbie to wrap my head...
  16. larger chip? garbage top and bottom? if I'm...

    larger chip? garbage top and bottom?
    if I'm understanding it right my new 27fs512 chip is 512mb,and the file I read from the Edelbrock was 32mb.
    maybe I didn't read it right? I changed the hex...
  17. hey 1project2many thank you, Hardware wise I'm...

    hey 1project2many thank you,

    Hardware wise I'm good I think....the truck is running now and has been this way for 10 yrs.

    Main thing I want to do is read the Edelbrock (old UV erase chip)chip...
  18. have question on Edelbrock chip and mpfi kit off a 454ss truck

    hey guys,
    I've searched and read for a few days on and off and really cant find an answer to my dilemma.....I usually can read and figure it out, but im struggling here :-)
    I have a 1991 chevy...
  19. finally taking the plunge to learn the obd1 chip reading and modify

    Hey guys,

    I'm finally taking the plunge to learn the obd1 chip reading and modifying.

    Ive done a lot of factory flashing and tinkered with the obd2 stuff,

    But given that we have 4 pre 96...
  20. Replies
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    22,676

    hey kitch, yes I had found that table,I thought...

    hey kitch,
    yes I had found that table,I thought that was where I needed to be, but wasn't sure ​so if I understand it correctly,all the vehicle specific tuning is on the prom chip, and the pcm is...
  21. Replies
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    22,676

    ok, just drove it some and only thing I noticed...

    ok, just drove it some and only thing I noticed is at WOT, ignition timing is at 14.09 degrees
    when back off throttle to say half to 1/3 it goes back to 22-24....and at light throttle pressure like...
  22. Replies
    10
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    22,676

    yes I did use the link myburb posted, and then I...

    yes I did use the link myburb posted, and then I tried to use it to read 2 other obd1 Chevys,we have sitting around,and I couldn't read any of them(93 5.7 tbi wagon)and a 92 Buick roadmaster 5.7..
    I...
  23. Replies
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    22,676

    ok thank you myburb for the quick reply. I tried...

    ok thank you myburb for the quick reply.
    I tried that adx and still nothing.
    I think maybe im having a connection issue....maybe driver or something\,its says hardware not found when I open tuner...
  24. Replies
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    22,676

    hey guys i need help

    hey yall, I really enjoy the forum,ive been reading and trying to learn how to use tunerpro rt as a scanner...…..
    reason being I have a 1993 3500 7.4 that's kicking my ass...I have an autel maxisys...
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