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  1. Replies
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    What's your wideband showing for fueling?? ...

    What's your wideband showing for fueling??

    Just because you are commanding 11.94 afr, doesn't mean it's actually there.

    Your also revving the engine pretty damn high if you have a stock...
  2. Thread: Judge me please.

    by 5FDP
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    Where is the IAT located? I saw that thing...

    Where is the IAT located?

    I saw that thing spike all the way to 250 degrees and even just cruising it's way up in the 140-160's.

    The log shows up to about 76% duty cycle, you are fine still. I...
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    It doesn't have a purpose. There are many...

    It doesn't have a purpose. There are many listings in there for whatever reason and no P01 or P59 calibration that I know of ever came with an operating system that had that selected.

    4L60e, 4L80e...
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    Nope. Those computers were never designed for...

    Nope.

    Those computers were never designed for that so there is no way to enable it. People still get by okay even running E85, they just need to know what they are doing fueling.
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    Without o2 sensors/fuel trims or a wideband...

    Without o2 sensors/fuel trims or a wideband information it's kind of impossible to see how it's running. I can see that it runs but that's about it.

    Are those injectors rated at 43.5psi or 58psi?...
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    Don't switch anything. Leave it as is and just...

    Don't switch anything.

    Leave it as is and just go into the DTC's and disable all transmission related codes. Then disabled abuse mode and any torque mngt. The drop down menu can cause weird...
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    What method are you using the scale the...

    What method are you using the scale the injectors?

    The most common is the double stoich, half the IFR, half the IVT terms to get you room to fit up to 127lb/hr injectors. But your injectors are...
  8. That won't be a PCM function, so HPT can't do...

    That won't be a PCM function, so HPT can't do that.
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    So that tune does or doesn't have the injector...

    So that tune does or doesn't have the injector data entered?

    It's going to a bit of a pain working around the 63.5lb/hr limit with such massive injectors.

    The calibration also has 2 bar MAP...
  10. It's late at night so I can't type a whole story...

    It's late at night so I can't type a whole story here but lots of things were not done. Certain features left enable that should be disabled.

    The airflow model doesn't look like it was changed at...
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    Use your log to show you. In that log you can...

    Use your log to show you.

    In that log you can create the same graph the timing curve uses. So make one for spark advanced that follows the engine rpm and cylinder airmass. That will show you where...
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    Trims some fuel and add a few degrees of timing. ...

    Trims some fuel and add a few degrees of timing.

    Commanded to actual was off a bit, it's running richer than commanded. Maybe aim for 20-24 degrees of timing.
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    The standard TPS channel only reads like 84 or...

    The standard TPS channel only reads like 84 or 88% on the GEN 4/GEN 5 computers.

    Which channel are you logging?
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    What's the fuel system like? Return, returnless....

    What's the fuel system like? Return, returnless. Boost referenced regulator or just a regular FPR maintaining pressure.

    Are those injectors rated at 43.5psi or 58psi?

    With the above too, if...
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    Chop the min fuel milligrams by about half too...

    Chop the min fuel milligrams by about half too under the transient tab, it's often a need with very large injectors.

    Make sure cylinder volume matches the engine size. (it's midnight, I didn't do...
  16. How sure are you that the dyno person knew what...

    How sure are you that the dyno person knew what they were doing?

    I see 9.75 commanded AFR at full throttle on a NA engine, I kinda stopped there because I'm not even sure the airflow model is...
  17. Thread: PE command issue

    by 5FDP
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    235

    That's kinda how you should be doing it. If...

    That's kinda how you should be doing it.

    If the wideband is already in the logs, a wideband error should be created to log the difference between the commanded AFR and actual AFR or Lambda. The...
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    Honestly that isn't really possible because there...

    Honestly that isn't really possible because there are so many variables in play here.

    Without data logs of it running with wideband air fuel ratio's it's impossible to predict what the calibration...
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    Correct, it won't cost you anything because you...

    Correct, it won't cost you anything because you have the stock file already licensed.

    Flashing back to stock is the way to do it. Do that first with a write entire. Then take the stock file and...
  20. Thread: PE command issue

    by 5FDP
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    235

    The PE value is only a request, so you could have...

    The PE value is only a request, so you could have to change the MAF/VVE to make it match the commanded value.

    Also if other things are still active like COT, it can cause it to run richer if that...
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    Yeah, a small tablet or something could be used....

    Yeah, a small tablet or something could be used. I'm sure many people have done that.

    Watch some video's or just download the free software from the main website if you want to play around with...
  22. Try 12.0 commanded AFR with 20 degrees of timing,...

    Try 12.0 commanded AFR with 20 degrees of timing, see what happens. Then creep up on the timing if you are allowed too.

    I ran 12.0-12.2 on 89 octane with 20-23 degrees of timing on my 2012 LC9 5.3...
  23. I'd try leaving the all the other data the same...

    I'd try leaving the all the other data the same and just change the flow rate information to 43.5 and run that pressure.

    If you are still running into rich idle condition you will want to lower...
  24. You're going to need to disable the post o2...

    You're going to need to disable the post o2 sensor test and the cat test itself in the engine diag's exhaust tab. As well as disabled the COT (cat over temp) in the fuel > temp control tab.


    The...
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    Just set COT to disabled.

    Just set COT to disabled.
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