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  1. I'd still really like to know the answer if...

    I'd still really like to know the answer if anyone knows?

    I can't get my head around the exhaust cam timing map at all.
  2. Judging by how the exhaust cam timing is around...

    Judging by how the exhaust cam timing is around idle, I'd assume the more negative numbers are earlier exhaust valve opening (less overlap) and more positive numbers are later exhaust valve opening...
  3. Exhaust cam angle. Which direction is which?

    Exhaust cam angle. Which direction is which?

    The intake is obvious but not so much the exhaust.

    Is a higher value (or less negative) more or less overlap?
  4. Under what conditions have you seen it active?...

    Under what conditions have you seen it active? Just supercharged setups or something? I don't like changing values unless I see it having an effect. I seem to get full power regardless of wheel speed...
  5. Yeah I'm glad I didn't try in the early days. I'm...

    Yeah I'm glad I didn't try in the early days. I'm thankful for what is there so far. I just hope they haven't stopped useful development, especially considering the fact that we need 8 vehicle...
  6. Thanks. Yeah I figured it would work that way...

    Thanks. Yeah I figured it would work that way with the closer soft limiter RPM gets to fuel cut RPM, the more aggressive the fuel cut. I guess "soft limiter" is the RPM limit using throttle blade...
  7. Yeah this one doesn't give any more useful...

    Yeah this one doesn't give any more useful details sadly. I'll just test using trial and error when I get a chance. It's way too hard to get past level 1 support with support tickets.
  8. RPM Limits: What is "Soft Limiter" vs the normal in-gear limit?

    What exactly is soft limiter in the context of the M156?

    Is in-gear 7010rpm limiter a fuel cut limiter and soft limiter is a throttle limiter?

    I'm just not sure where each comes in to play,...
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    OK so I filled max desired throttle with 100...

    OK so I filled max desired throttle with 100 values and max aircharge WOT with the higher values from one of the other variants.

    Throttle now opens at the curve of "throttle angle at max flow"...
  10. M156 "Wheel Torque vs VSS" Table. Experiences?

    Can anyone share experiences with the "Wheel Torque vs VSS" Table?

    I doubt it can be wheel torque. It must be engine torque. Wheel torque would be much higher after gear reduction and nobody would...
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    I did a stock log and the throttle position...

    I did a stock log and the throttle position mimicks the "Max Desired Throttle" for my variant so that's the first one to get out of the way.

    I'm guessing the "Max Aircharge WOT" will also be a...
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    Sticky: Any chance this thread could be updated to...

    Any chance this thread could be updated to include all the throttle stuff, wheel torque limit table, permissible torque tables etc. etc. etc?
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    Any chance someone could provide a definitive...

    Any chance someone could provide a definitive guide of getting the throttle open all the way and hold and which tables do not need touching?

    I have attached a screenshot of 8 tables and that's not...
  14. Or do special editions simply have a different...

    Or do special editions simply have a different vehicle configuration selector and the max aircharge at WOT is the only difference?
  15. Can I please have a stock file for a C63 Edition 507?

    Hi guys,

    I wasn't expecting to see no Mercedes stock files in the HPTuners tune repository at all.

    If I can get a stock file for a C63 Edition 507, that'd be greatly appreciated. Seeing the...
  16. Is the 14.7:1 cruise AFR target on M156 REALLY hard coded?

    Is the 14.7:1 cruise AFR target on M156 REALLY hard coded or is it just a flag or table that has not yet been discovered by HPTuners?

    This large capacity high compression engine has huge pumping...
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    Thanks

    Thanks
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    Can HPTuners disable codes for catless?

    I know there have been crackdowns on tuning companies in this in the US.

    I just want to make sure it's definitely possible to disable catless codes as a result of using long tube headers...
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    What features does HPTuners have for this engine...

    What features does HPTuners have for this engine over other flash options like UpRev? I suspect it may be possible to retrofit the later CAN ECU for manual transmission models where the K-Line is...
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    Are the centrelines of the new cams different...

    Are the centrelines of the new cams different from stock? Have you tried retarding the intake cam more at high RPM?
  21. I am struggling to get my head around the VVE...

    I am struggling to get my head around the VVE stuff to be honest. Is it also common practice to simply enable the 2.5bar Operating System mod which gives you normal VE tables, put the stock MAP...
  22. Why MAFless tune needed to do good MAF tune when VE table is not filled from factory?

    I'm new to GM tuning so bear with me. I did search.

    With a lot of E38 factory calibrations, the VE table is not populated.

    People say to do the best MAF tune you should have a good accurate...
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    Do you have closed loop completely disabled? If...

    Do you have closed loop completely disabled? If not, I'm surprised that the trims didn't bring the lambda back to 1 (14.7:1) regardless of what's in that table as the narrowband sensors used for...
  24. Disable closed loop and tune for lean cruise?

    Hi,

    On other vehicles of my own, i've had measurable improvements in fuel economy by running around 15.6-15.8:1 AFR in light load and cruise due to reduced pumping losses.

    I'll have NN disabled...
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