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Type: Posts; User: cervan

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    I didnt even realize i didnt log rpm, i...

    I didnt even realize i didnt log rpm, i apologize. I will take a log tomorrow including more channels. Im not positive that its on correct timing and i didnt see any vacuum leaks. however wouldnt the...
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    04 tahoe will not idle after cam swap

    Im sure there have been a billion and a half threads on this exact issue, but ive gone over just about every single one and have not found a solution. Truck is an 04 tahoe with a stock 5.3 and...
  3. Thread: 6.0 tuning

    by cervan
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    1,863

    6.0 tuning

    Figured out the problem, mods please delete.
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    I solved this issue, ended up being a bad pcm....

    I solved this issue, ended up being a bad pcm. Swapped in a new one and everything worked perfectly.
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    So i thought i would update this thread. Ive...

    So i thought i would update this thread. Ive swapped back to stock injectors out of a 5.3, i seem to be having the exact same issues i was having with the 80lb injectors. attempting to command an AFR...
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    i havent hooked up the pro wideband i didnt have...

    i havent hooked up the pro wideband i didnt have time today.

    I still dont understand why if the ve table is zero where the engine is idling why the engine continues to inject fuel. it should be...
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    you might be right, and the wideband might just...

    you might be right, and the wideband might just be reading wrong. because i feel the idle smooth out when i move the afr's up but i dont seem to see it on the wideband. I followed the installation...
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    ill double check the wideband but last i checked...

    ill double check the wideband but last i checked its right on the money. viewing between the gauge and what the log is reading its very close, within a tenth.

    As for the engine fueling issue, it...
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    Attempting to adjust my idle with the afr...

    Attempting to adjust my idle with the afr bi-directional controls results in nothing until around 17:1 and then it goes from 10 to 10.5 and then at commanded 20 it reaches 11.5 and quickly dies and...
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    I can lean it out a tiny bit, but as soon as i...

    I can lean it out a tiny bit, but as soon as i start leaning it out it starts getting leaner and dies suddenly and will not restart unless i drop the afr control down to 14.7 again at which it pegs...
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    here is a log and a copy of my tune so you can...

    here is a log and a copy of my tune so you can see what ive done. this log shows what the engine ran on in the log.
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    ok so i got my RAF parameters in correctly and...

    ok so i got my RAF parameters in correctly and its showing readings, however now im having an issue where the engine starts and idles pig rich below 10 AFR reguardless of what the ve table says. I...
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    i realized that it was not populating the tables...

    i realized that it was not populating the tables and was attempting to tell you that. so here is a log of it at full temp attempting to log the idle airflow through those tables. They are not...
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    i setup a new math channel, added both of the...

    i setup a new math channel, added both of the logging channels for stit and ltit i can see both of them showing numbers being put out in the channels but the graph table does not move or populate....
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    I wasnt implying that hptuners was any worse or...

    I wasnt implying that hptuners was any worse or better than the others, just that the others may be more user friendly. Seeing as what your saying is true ill put more effort forth into this setup.
    ...
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    ive read just about every how to guide on this...

    ive read just about every how to guide on this problem. Seeing as every table in hptuners is so convoluted im about to call it quits on hptuners and switch to efilive or rip out the entire system go...
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    well thats kind of shitty, so i still have to...

    well thats kind of shitty, so i still have to emulate a narrowband just to get readings in closed loop when im not tuning it? Should i put the narrowband output to both banks, or just one?

    One...
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    So ive been doing alot of research and im trying...

    So ive been doing alot of research and im trying to get this thing figured out.

    is the wideband input through either the egr/ac input read at all times just like the stock narrow band o2 sensors...
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    Swapping the outer wires worked perfectly, no...

    Swapping the outer wires worked perfectly, no more codes! im getting perfect cam counts now.

    Zeroing out the min injector pw tables allowed me to get a leaner idle but now im fighting a surging...
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    i will try that tomorrow. Im also getting a cam...

    i will try that tomorrow. Im also getting a cam position sensor low error. I read online that the ls2 front pickup cam sensor is supposed to see 5v and i was getting a P0341- cam position sensor...
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    i think you guys are right, there seems to be a...

    i think you guys are right, there seems to be a hard limit to the lowest possible m/s injection time of 1.5 ms. I had my injection adder, and pw min set at 300 and it still sits steady at 1.5ms...
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    Thanks for the input and ill check out the...

    Thanks for the input and ill check out the settings that you guys highlighted. I found that in my front cam sensor conversion with the ls2 cam i needed to change the input voltage to the sensor from...
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    Incredible amount of problems with tune

    Im pulling my hair out just trying to get a decent running tune for my turbo 4.8. here is the low down on my entire build.

    Stock 4.8 bottom end with 317 6.0 heads (i know low compression) ls2 cam...
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    injector flow rate table deciphering

    I got this flow rate table from the person i bought my injectors from. I cannot for the life of me make out what the hell they are trying to convey. Am i reading this incorrectly or am i missing half...
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    Fuel pump, radiator fan PWM output frequency?

    Hi, im wondering if anybody knows the hertz range that the ecm outputs to control the fuel pump and radiator fans in PWM mode? Im thinking about devising a solid state relay setup to control them...
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