10-01-2018, 06:41 PM | #46 | |
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This low end torque of N55 vs S55 has become one of the most popular topics recently I don't think different low end behavior has anything to do with engine itself. Early M3/M4 models had a higher low end torque as well. BMW changed this behavior via DME software updates in the past couple years. I posted about this in a different thread but will share it here as well:
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10-01-2018, 06:52 PM | #47 | ||
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10-01-2018, 09:25 PM | #49 |
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On the dyno graph from EAS it stated the car was running on 91 Octane...
So the car wasn't running on 93 octane? If so the DME set the engine to run at lower ignition timing and more power would be available when running on 93 as the S55 was optimised for 93. |
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10-01-2018, 09:27 PM | #50 |
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10-01-2018, 09:36 PM | #51 |
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Lol, or a S2k. My racecar hits full boost by 3300, but that is intentional as it is a drag car and the converter will push through about then... so lines up pretty well.
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10-01-2018, 10:38 PM | #52 | |
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It would have to make a difference. Still, over 600 torques is massive. That’s nearly double my old e36 M3! |
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10-01-2018, 10:52 PM | #53 |
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Yes California has sh*t 91oct. Along with some other western states.
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10-01-2018, 11:08 PM | #54 | |
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(Ok, maybe not quite that bad)
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10-01-2018, 11:09 PM | #55 |
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10-02-2018, 12:21 AM | #56 | |
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10-02-2018, 12:33 AM | #57 |
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Going back to the M3/M4 launch, that actually was the complaint from early owners and reviewers of the car. I remember some owners asking tuners for a fix, a more linear powerband tune. The original base M3/M4 was a handful at low rpm’s, almost evil in damp condition. BMW has since listened and finely tuned the S55(rolling out software updates). Now with the recent M3/M4 CS, which has even more power but is credited for its smooth and linear power delivery.
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10-02-2018, 01:54 AM | #60 |
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10-02-2018, 01:58 AM | #61 |
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I could agree with that - m240i is an awesome car for sure. Already have an M2 and have an M2c on order but i’m not sure if I can live with the huge muffler after seeing it in person, I mean… I want my car to be bad ass but I want it to look good also. Might just hold off and see what the S58 M2 is all about and enjoy what I have for a daily. I don’t track my cars, don’t have that kind of spare time. One thing I know for sure, my M2 is a lot more fun to drive to my brothers RS3
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10-02-2018, 07:00 AM | #62 | |
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10-02-2018, 08:45 AM | #63 | ||
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10-02-2018, 08:52 AM | #64 |
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Absolutely.
Nothing we can do but mod the car... which I am all for! I feel for those who want to keep warranty, though. If there was a way for them to get the CS flash, it'd be what, 460whp?
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