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Type: Posts; User: XDR

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    3.0 Wideband Reading Off, How to Adjust?

    My LC-2 reads 0.2 higher in HP Tuners 3.0 scanner vs the Innovate Log Works. For example, when reading 14.6 in Low Works (via serial), HP Tuners would show 14.70-14.90. I know that you can adjust...
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    Ended up being a bad Corvette style FPR....

    Ended up being a bad Corvette style FPR....
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    So then the narrowband will force the lean/rich...

    So then the narrowband will force the lean/rich swing, wouldn't be more effective to have open loop that maintains stoich?
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    Post Tune Closed Loop?

    So after I get my VE table and MAF dialed in using Open Loop. Do I re-enable my narrow band o2 sensors and go back to closed loop?
  5. Thread: Serial Wide Band

    by XDR
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    I think it has to be built in with coding, look...

    I think it has to be built in with coding, look here to request the WB you are using if you haven't seen this thread already;...
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    Has LC-2 been fixed? What advantages are there...

    Has LC-2 been fixed? What advantages are there for running serial input vs running it through the HP Tuners MPVI? I've heard that serial is slower, is it slow enough to effect readings in a negative...
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    Cool, I'm going to stop tuning (at least I was...

    Cool, I'm going to stop tuning (at least I was going rich if anything) until I get the adapter in so I can see.
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    Looks like you can... Just ordered the Sewell...

    Looks like you can... Just ordered the Sewell (Innovate 3733) USB to Serial Adapter for $12.45 shipped on eBay... So I guess I'll be able to find out if I do have a voltage offset. Now that I'll have...
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    Don't have a serial-usb adapter to hook up to my...

    Don't have a serial-usb adapter to hook up to my macbook. So you can see a live feed via LogWorks? May be a cheaper alternative to buy the adapter cable than a gauge.
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    LC-2 Reading vs Narrowband

    Don't have a gauge to set voltage offsets, but would you say my WB is off? Below is my readings, using OE LC-2 0-5v outputs.

    Air/Fuel Commanded: 14.68
    LC-2: 14.93 (Lean)

    o2 B1 .781 (Rich)
    o2...
  11. Thread: AFR Swings

    by XDR
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    AFR Swings

    Just got my LC-2 installed (no gauge) and doing some open loop tuning/logging. Something I notice is the max and min of any particular cell swings upwards of 20%, meaning + may read 9.4 and - may...
  12. A detailed filter guide and common filter...

    A detailed filter guide and common filter strings. Ed has already helped me get started and explained some stuff to me. This is something that is hard to find on the net.
  13. Thread: Dead o2 Sensor?

    by XDR
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    Also, the truck has no driveability issues or...

    Also, the truck has no driveability issues or codes.
  14. Thread: Dead o2 Sensor?

    by XDR
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    Dead o2 Sensor?

    At idle my B1S1 stays steady around ~500mv with little movement compared to the B2S2. Would this mean a dead o2 sensor? Here is a log file, toward the end you can see the flat spot.

    Vehicle is a...
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    Is there a change log with the updates? Also, HP...

    Is there a change log with the updates? Also, HP Tuners admins, would you be able to incorporate which version is available for download, so I'm not downloading the same one over and over.
  16. https://www.hptuners.com/customers/tune.php

    https://www.hptuners.com/customers/tune.php
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    Well I just checked my fuel rail pressure, key on...

    Well I just checked my fuel rail pressure, key on ign off its at 48 PSI, and 52 PSI at idle. Also, I see minimal bleedoff after its turned off, 1 PSI every 30-60 seconds. I ordered a 255lph fuel pump...
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    1 BAR SD - High/Low Octane Spark

    So if the PCM reverts back to Low Octane map when the MAF is set to fail, why is there a High map? Or does this OS not need the MAF set to fail?
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    Well the fuel trims are pretty close ~1% when its...

    Well the fuel trims are pretty close ~1% when its happening now. Some things I noted, seems to always be in FTC 14 when its happening, and it always pulls spark down to ~5. Cruise spark is around ~25...
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    Stock internals and shorty headers. The spark...

    Stock internals and shorty headers. The spark spike was even without lugging the motor, stutter can only be felt during that time. I have loaded the stock spark maps and have been logging KR and BKR...
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    Watching the log and comparing it to my truck...

    Watching the log and comparing it to my truck (lq4) I notice that the spark timing is reacting really weird. If you look at the log file, when off throttle spark is ~25*, as soon as tps is present it...
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    So far I have tried loading the stock 5.3 spark...

    So far I have tried loading the stock 5.3 spark maps and settings from the repository, no change. Also tried enable changing delta cyl air to 8.0 with no change.

    What else could cause spark...
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    Low RPM High MAP Stutter

    Doing some SD VE tuning and trying to figure out while around ~1200 RPM and 70-90 MAP the engine stutters. It looks like the o2 sensors are working, was my initial thought.

    Engine is a 2001 5.3...
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    I run HP Tuners on my MacBook Pro, I have Windows...

    I run HP Tuners on my MacBook Pro, I have Windows 7 Starter installed using Parallel Desktops. Works pretty good but would appreciate a Mac OSx specific version.
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    That could be it, I have 2.24.949.

    That could be it, I have 2.24.949.
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