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2Addicts | BMW 2-Series forum Technical Topics N20 (228i) / B46 (230i) Engine, Transmission, Exhaust, Tuning DSC calibration 228 vs 235?

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      01-15-2016, 09:58 AM   #1
simoneves
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DSC calibration 228 vs 235?

I'm already overthinking the idea of a tune for my 228, but the other thread about how DSC works made me wonder if the 228 has the same DSC calibration as the 235. In other words, if a 228 was tuned to have similar torque as a stock 235, would the DSC adapt or would it not react as well for the same torque?
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      01-15-2016, 10:46 AM   #2
2msport
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Just turn it off Haha Personally I'm always in Sport+ so grip comes down to the tires except for extreme sideway situations. I rarely see dynamic traction control intervene when my wheels are spinning going in a straight line. (In my 228 with equivalent 235 power)

I would think the systems would be identical. With DSC enabled it doesn't know or care how much power/torque you have. It's just looking for wheel spin right?

That's my best guess.

Last edited by 2msport; 01-15-2016 at 10:59 AM..
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      01-15-2016, 10:51 AM   #3
MG 228i
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The DSC is more active now with a tune because it's easier to break the tires loose.

You can feel it working in Comfort or Sport when suddenly accelerating in lower gears.
So I drive most of the time in Sport+ now so it doesn't cut as much power.
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      01-15-2016, 11:01 AM   #4
2msport
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Shoot I don't even know how it behaves in Sport. That would suck if its constantly cutting power.

+1 for Sport+
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      02-03-2016, 03:51 PM   #5
sonicsonic
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We made f30 328i dsc coded to 335i. The owner sais that he feels positive difference. He will continue testing his car during few days than I'll post his feedback.
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      04-04-2016, 12:42 PM   #6
bNks334
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OP, there isn't much to gain by looking into DSC's calibration imo. To answer your question though YES the x28i DSC is calibrated differently than an x35i. DSC measures more than wheel slip. DSC is comprised of a nest of functions (CBC, ASC, EBV etc) that work together as one active system. Pitch, yaw, wheel speed differential, steering angle, among other values are all considered dynamically in order to keep the vehicle from under-steering or over-steering. This is happening regardless of how much power you are putting down. If DSC is kicking in too much for your liking than either put enough rubber on the car to get the power down properly or turn DSC off. Keep in mind that even after turning DSC completely off (Hold traction control button for 5 seconds) you'll still have the e-diff intervening.

The differential between the coding of the two cars is so minuscule that I honestly doubt you'd even be able to tell the difference between the coding changes. You might get what an additional 1* of slip before DSC intervenes? You may also cause DSC to intervene inappropriately as the x35i is coded to control a heavier car with greater brake torque among other unknown values the car uses to determine how aggressively to intervene...

Last edited by bNks334; 04-04-2016 at 12:48 PM..
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