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  1. Replies
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    No MAF. Car didn't have one in N/A configuration...

    No MAF. Car didn't have one in N/A configuration for a couple years. My involvement began when the decision was made to add turbocharger and the MAF was long gone with no previsions in the truncated...
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    An update for anybody following: With Hymey...

    An update for anybody following:

    With Hymey and Swingtan's insite that the stomp gas was heavily dependent on the MAF we came up with a workaround. The assumption is the accelerator pump fuel at...
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    Yes, the three bar 60lb injectors had to be...

    Yes, the three bar 60lb injectors had to be scaled for the four bar fuel system. From the thread below I have been modifying the stomp dynamics (B2012 +20%) and haven't seen a significant change....
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    Unable to give the car full throttle

    Car starts easily, idles nice, works fine with minimal throttle input. Really stumped on why this car won't take any throttle. Airflow doubles in the log and car starts popping. It is in open loop,...
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    Not related because of the stripped down harness:...

    Not related because of the stripped down harness: MAF circuit, Generator F. The MIL is not set.
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    Car is running in open loop now. Had to zero the...

    Car is running in open loop now. Had to zero the table on variable cam timing to play with the virtual VE tables. Problem we are having now is we can't go full throttle. Just about when the front end...
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    Following Swingtan's tutorial on the E38 VVT,...

    Following Swingtan's tutorial on the E38 VVT, lowering B0156 from 95% down to 4% got it to behave correctly. Quite a drastic change.
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    I am having an issue with this as well, seeing...

    I am having an issue with this as well, seeing 130 kPa and still commanding 1.000. I have had B0157 set to 55 kPa. Looks like I will have to be much more aggressive going after B0156 throttle area if...
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    Starting problem was B1832 scaled by 50% when the...

    Starting problem was B1832 scaled by 50% when the correct answer was 2X. Fires up instantly now hot or really cold. This table I assume is my cranking airflow I was looking for. RPM and MAP ranges...
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    The car is getting way to much fuel at start-up....

    The car is getting way to much fuel at start-up. Have been attacking the VE tables. Wondering if I missed a table somewhere. I looked for a cranking airflow but didn't find anything.
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    E67 turbo LE5 with variable cams

    This is my start-up tune for adding a turbocharger to a 2.4L LE5. The engine has been operated N/A without a MAF for a couple years. Besides adding turbo hardware from a 2.0, it has been fitted with...
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    Thank you

    Thank you
  13. Replies
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    All my reference files were from 2006 vehicles....

    All my reference files were from 2006 vehicles. The donor for the buggy was a 2009 Solstice. I found a 2007 Sky that had the same table so my confidence has improved that this wasn't the result of...
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    E67 B4001 chart scale kPa values?

    We are adding a turbo to an LE5 powered buggy. Siemens Deka 60lb injectors and 2 bar MAP. The car was previously tuned MAFless and operated for a couple years without issue. I read the tune and I am...
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    Time for my next project: Anyone have a stock...

    Time for my next project: Anyone have a stock 2015 Cadillac ATS LFX V6 tune file?
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    LE5 tune

    Looking for a stock 2009 Pontiac Slostice 2.4L tune to compare with my buggy tune. Cooling fans don't want to come on.
    Meanwhile, a Hummer H3T I5 stock calibration to share.
    19906
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    Your AC pressure is averaging 2.7V. Isn't that...

    Your AC pressure is averaging 2.7V. Isn't that lean? 1.05 lambda
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    How old are your NBO2s? It is not so much...

    How old are your NBO2s? It is not so much believing them over your WB, they are running the engine and your correction factors will be thrown off by the deviation. How come you are not taking...
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    My LC-1 doesn't agree with my NBs either. I added...

    My LC-1 doesn't agree with my NBs either. I added a 1.8% fudge factor to my calc PIDs to compensate. I chalked it up to sensor tolerances.
  20. Well, I am curious to see how your tune lines up...

    Well, I am curious to see how your tune lines up with and without MAF enabled. I definitely got different results when I tuned separately vs simultaneous. That final sub-2% variation in the airflow...
  21. Gelf, do you have a recent normal driving loop...

    Gelf, do you have a recent normal driving loop log? Preferably 30+ minutes? I've found the readings stabilize after 20 minutes of driving. Was probably you that pointed that out to me. I'm comparing...
  22. Short answer: Great with your formulas. If you...

    Short answer: Great with your formulas. If you didn't mash the pedal and let the turbo sing, you would not know you were driving a modified vehicle. My MPG display is even accurate to 1%.

    In the...
  23. Wife will be happy when I tell her you said I...

    Wife will be happy when I tell her you said I couldn't turbocharge the Hummer.
  24. When I first open the tune file and I first open...

    When I first open the tune file and I first open the virtual VE table. I did just run the check for updates and firmware. Said I was current.
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    Another noobs answer to your question is probably...

    Another noobs answer to your question is probably not. There are tables in every ECU that we just don't have access to. For instance in my E40 I don't have access to rescale the IAT input when I...
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