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  1. Replies
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    The equation is y=mx+b, where y is the map value,...

    The equation is y=mx+b, where y is the map value, m is the slope, x is the voltage input, and b is the offset.

    To find the slope, you need to know 2 points of data (usually advertised at 0.5 volts...
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    '04 F250 Speedometer Correction

    Anyone had any luck getting the speedometer (along with the broadcast VSS PID in the scanner) corrected for tire size? I've tried correcting every parameter for the given tire size that is found in...
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    Curious about this also (SBEC controllers), as...

    Curious about this also (SBEC controllers), as well as NGC1.
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    The hidden parameters make all the difference,...

    The hidden parameters make all the difference, the transmission is actually quite tuneable once they are modified.

    I understand hexadecimal, but I lack the knowledge and tools to pull a binary...
  5. So, just some thoughts on this from my...

    So, just some thoughts on this from my perspective.

    Theoretically, you would ideally run the same Lambda value regardless of fuel type (Gasoline, Alcohol, etc...). Our Gen3 Hemis tend to like to...
  6. Just out of curiosity, what do you have your fuel...

    Just out of curiosity, what do you have your fuel PE values set to?
  7. Stoich values are just the inverse of AFR (or in...

    Stoich values are just the inverse of AFR (or in other words, FAR - Fuel to Air Ratio).

    Stoich AFR for gasoline = 14.7:1
    Stoich AFR for e85 = 9.85:1

    1/14.7=.068 for gasoline
    1/9.85 = .1015...
  8. The first glaringly obvious problem is that the...

    The first glaringly obvious problem is that the fuel stoich values are all still set for gasoline. The fact that those are setup wrong means the power enrichment adders are also set incorrectly. And...
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    I remember having an issue with the trans in my...

    I remember having an issue with the trans in my truck after disabling the "Trans Limit" ([ECM] 7870, follow the path ---> Engine - Diesel Fueling - Main Injection Limits). I just don't recall what...
  10. Just a minor correction here, but important...

    Just a minor correction here, but important nonetheless. 2003 through 2005 Dodge Neon SRT-4 all came stock with 2.25 bar map sensors. The Neon had a Mopar S2 or S3 kit that would add a 3 bar map...
  11. OK, went out and verified some things. 1) A...

    OK, went out and verified some things.

    1) A value of anything greater than 1.0 (for example 1.10) is an open loop fuel mass multiplier. In the case of a value of 1.10, it means it adds 10% fuel...
  12. Gotcha. I'll have to verify what my thought...

    Gotcha. I'll have to verify what my thought process has been on this when I get home from work today. Have a Neon in for tuning that I need the get started on. I'll work on verifying the boost vs...
  13. Not sure I grasp your question. Looking at the...

    Not sure I grasp your question. Looking at the s3 calibration, it has its boost range up into -175 kpa vacuum (or, as any normal person would label it, 175 kpa boost), while the stock calibration is...
  14. Very peculiar, all of this. You'd think that as...

    Very peculiar, all of this. You'd think that as long as the injector data were accurate and there were no modifier/multiplier tables mucking around with your airflow or fuel flow model that VE would...
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    Ok, well, the 05's still have said functionality,...

    Ok, well, the 05's still have said functionality, whether it comes from a BCM, PDC, FCM, or TIPM. It sounds an aweful lot like what he is experiencing. But without further information, it's hard to...
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    Does it do it even when the doors are closed, or...

    Does it do it even when the doors are closed, or only when open? The auto trucks have a "feature" (more like annoyance) that will blast the horn and flash the lights if the door is open and the PRNDL...
  17. Isn't your log showing 14* of knock retard?...

    Isn't your log showing 14* of knock retard? Wouldnt that be the first thing to look at? Is the knock sensor registering a lot of voltage?
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    Ah, gotcha. My lack of VVT tuning is showing...

    Ah, gotcha. My lack of VVT tuning is showing through. Thanks for the correction.
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    Typically the opposite is true of cams. Retarded...

    Typically the opposite is true of cams. Retarded cam timing usually results in sluggish bottom-to-midrange, but improves power up top.
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    https://www.highhorseperformance.com/MOPAR_2_Bar_M...

    https://www.highhorseperformance.com/MOPAR_2_Bar_Map_Sensor_All_SRT_8_Models_5033224A_p/5033224ab.htm

    If it's the above sensor, it's a 2.25 BAR sensor. They (and pretty much everyone that sells...
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    Assuming you're using an SRT-4 MAP sensor, it's...

    Assuming you're using an SRT-4 MAP sensor, it's actually not a 2 bar, but a 2.25 bar sensor. In which case, setting your MAP limit to 225 would have no Ill effects. A 3 bar sensor isn't going to...
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    Sounds to me like you're simply running into...

    Sounds to me like you're simply running into physics... Bigger turbo, more lag. Your stock turbo was so small and responsive that you could build positive pressure at the lower RPM range (where you...
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    It does. I assume it's on a PID loop which...

    It does. I assume it's on a PID loop which measures rate of acceleration and modulates aggressiveness of the limiter accordingly so that it's not a sudden derate, but more of a linear derate.
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    This seems to be a concept that many people...

    This seems to be a concept that many people misunderstand. Jim P is correct, HP Tuners didn't create a custom OS, nor does it flash a custom OS into the ECM. This goes for pretty much every...
  25. What conditions have led to this? Is this...

    What conditions have led to this? Is this something you only see in boosted applications? I only ask because I have Sensed MAP enabled on my '06 JGC SRT-8 that uses NGC3 CAN, and haven't had any...
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