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    Remember I've never actually "tuned" and LS...

    Remember I've never actually "tuned" and LS engine. But from what I've read, your idle spark should be AROUND 17-23 degrees. For cranking, the stock tables should work, adjust from there to find what...
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    Disclaimer: Most of my experience has been on...

    Disclaimer: Most of my experience has been on tuning an l31 vortec, which is a gen 1 small block chevy. The tuning process is identical to gen 3 LS engines but the specifics (like ideal idle spark)...
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    We can't help you unless you post a log and tune...

    We can't help you unless you post a log and tune file.
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    I was about to post the same link. For OP:...

    I was about to post the same link.

    For OP: follow that guide. It'll get your idle just about perfect.
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    You can use lean cruise with hp tuners. Just...

    You can use lean cruise with hp tuners. Just change the platform type to V (holden), copy over your system options from gmt610 to v. Fill in the lean cruise tables. Write entire. Enjoy!
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    To my understanding, yes. I pulled up a .bin file...

    To my understanding, yes. I pulled up a .bin file matching your OS in Universal Patcher. I didn't see anything in a cursory glance, but I'll look deeper in a little while.
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    I've been through this before. Newer computers...

    I've been through this before. Newer computers have a table for "DFCO delay", the old ones do not. Sorry but I'm 98% sure you're out of luck on this one
  8. Thread: dfco surge

    by awest623
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    768

    Gotcha, it wasn't zeroed out in the tune or log...

    Gotcha, it wasn't zeroed out in the tune or log you posted and from the PIDs I can see it's the only thing adding airflow (besides AC Torque Loss which you don't want to mess with)

    134722 134723
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    Might've bricked the ECU if your battery is...

    Might've bricked the ECU if your battery is old/kinda low. A fail during write entire will usually kill the ECU (or at least kill it enough that HP Tuners can't write to it). I'd put that battery on...
  10. Thread: dfco surge

    by awest623
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    768

    Try lowering the Throttle Cracker Airflow in the...

    Try lowering the Throttle Cracker Airflow in the regions where the surging is happening. I think it's commanding too much airflow and kicking it out of DFCO (ENGINE->IDLE->AIRFLOW)
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    My truck never came with heated rear o2 sensors...

    My truck never came with heated rear o2 sensors anyways. I'll give that a shot sometime. I haven't noticed it commanding lean outside of when I'm in lean cruise.
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    Yup, I tried this before he made his replay...

    Yup, I tried this before he made his replay saying not to. It didn't make a difference. Probably the only way I see around it is to adjust the OLFA ever so slightly lean so it doesn't command stoich...
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    Duty cycle seems fine. Bank 2 is richer than bank...

    Duty cycle seems fine. Bank 2 is richer than bank 1, but both are still very lean.

    You mentioned you got new injectors. Do you have the specs for those? Or a link to the website you bought them...
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    If that checks out. Can I see a log including...

    If that checks out. Can I see a log including injector duty cycle?
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    You definitely have a fueling problem, running...

    You definitely have a fueling problem, running stupid lean. In some spots it's adding up to 42% more fuel with fuel trims. The only places fueling looks normal is at idle and on decel. Nothing in...
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    Gotcha. Thanks for the information

    Gotcha. Thanks for the information
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    I might try enabling the codes. I don't believe...

    I might try enabling the codes. I don't believe the post cat O2 wiring is even in the harness anymore.
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    Honestly, it's just annoying more than anything....

    Honestly, it's just annoying more than anything. Once I re-enable DFCO it won't make a difference anyways. At this point the only reason I'm not going back to the 0411 PCM is because I don't have an...
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    Interesting. I'll have to look into that more but...

    Interesting. I'll have to look into that more but it makes sense. I just recently did the P59 swap and I'm using a 2005 Mexican truck operating system. I was hoping to eventually get the truck back...
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    Here's my scanner layout as well, in case anyone...

    Here's my scanner layout as well, in case anyone wants to use it

    134450
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    Why is my tune commanding rich?

    I was doing some lean cruise tuning today and noticed that the tune is commanding rich (eq~.948) when throttle is approaching or at 0 and decelerating. I've looked through my tune file and can't find...
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    Well it won't let me save changes to the tune...

    Well it won't let me save changes to the tune file, so here's exactly what I'd change:

    1st tune file:
    o Throttle cracker enable speed: 255 mph
    o Throttle cracker disable speed: 254 mph
    o...
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    Got a chance to take a peak at it. I noticed a...

    Got a chance to take a peak at it.

    I noticed a couple things:

    o Your DFCO entry vehicle speed it pretty high, not a factor in this log but I would personally drop the speed down to something...
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    Can you post a log file along with the timestamps...

    Can you post a log file along with the timestamps of when you want DFCO to trigger?

    I need to see these values:

    Throttle position
    Engine rpm
    Vehicle Speed
    Equivalence Ratio Commanded...
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    His truck doesn't have canbuss...

    His truck doesn't have canbuss...
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