Stutter between gear shifts under WOT

[TopherSho]

The stutter has been described as the car attempting to shift - not shifting - attempting to shift - not shifting and then shifting - all of this in a split second.   It is a bit of a mystery why some cars do it with high shift pressure and some do not.  It is also odd that in several cases, new fresh fluid eliminates the issue and in other cases, it has no effect.   

As Todd and I have both confirmed, lowering the pressure to prevent it does not hurt acceleration.

How fast is the shift being commanded if i may ask.   I am at 200ms.. and am curious if 180ms is to much.

[StealBlueSho]

The stutter has been described as the car attempting to shift - not shifting - attempting to shift - not shifting and then shifting - all of this in a split second.   It is a bit of a mystery why some cars do it with high shift pressure and some do not.  It is also odd that in several cases, new fresh fluid eliminates the issue and in other cases, it has no effect.   

As Todd and I have both confirmed, lowering the pressure to prevent it does not hurt acceleration.

How fast is the shift being commanded if i may ask.   I am at 200ms.. and am curious if 180ms is to much.

Ask LMS, they generally don't disclose their tuning parameters.

[TopherSho]

Ya know what i'm feeling cheeky so i will do just that

[16MagSport]

Hasn't someone logged an LMS tuned car?  The LMS guy on another forum wouldn't divulge any info, but then again I don't think he knew anything.  This was my take from him.  It is a magic black box that none of us could understand what it does, so just plug it in and don't ask questions.


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[StealBlueSho]

I have logged my LMS tunes. Not sure if there is a a pid or DMR that captures that data... I can check...

[TopherSho]

Ya know what i'm feeling cheeky so i will do just that

Bah, cheeky bastards deflected   .. no answer there   .. my quest continues.

[16MagSport]

I don't think we get to talk to the tuners.  LMS has them locked up in the back room and just has salesman go on the forums and answer questions.  That is my take on it anyway.


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