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S550 Torque Decel
Anybody knows what control TQ BASE DECEL in S550 calibrations?
S197 calibrations have the switch for decel and S550 have only few parameters in IDLE>GENERAL tab like MAX RPM ERROR etc but not sure how those work.
Once in a while under steady state condition spark source enters tq base decel and cuts the spark to almost nothing - mostly after upshift.
S550 with procharger.
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Example - steady state light accel 20% pedal, upshifts nicely trough 2,3,4,5 - enters trans shift mode while shifting.
On 5-6 shift decides to enter tq base decel even tho pedal input is steady and drops the spark by 10 degrees and you can really feel it.
example tq base decel.jpg
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Tuner
Did you ever get clarity with this?
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Not really, it can be tweaked with torque model but it's still there occasionally.