Maximum shift line pressure

A forum for discussing applications and implementations of the MegaShift transmission controller code for the GPIO from B&G. This can control up to 8-speeds and 6 shift solenoids (plus a 16x9 table for controlling a PWM line pressure valve). It has manual and fully automatic modes (16x9 load x speed table), with under and over rev-limit protection, and full data logging of all inputs and outputs (among many other abilities). A TransStim to test your completed board is also available.
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flak monkey
Posts: 50
Joined: Sun Sep 21, 2014 11:28 am

Maximum shift line pressure

Post by flak monkey »

Is there a reason the code will not allow a maximum of 100% line pressure during a shift? Seems to be limited to 90%?
Bernard Fife
Posts: 1696
Joined: Fri Apr 04, 2008 1:28 pm

Re: Maximum shift line pressure

Post by Bernard Fife »

fm,

See this: http://www.msgpio.com/manuals/mshift/V5tune.html#gl This is limited to 90% by the INI. You can change that limit by editing the INI lines:

Code: Select all

;  maxUPpressure1        = scalar,  U08,    634,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 1st
  maxUPpressure2        = scalar,  U08,    635,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 2nd
  maxUPpressure3        = scalar,  U08,    636,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 3rd
  maxUPpressure4        = scalar,  U08,    637,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 4th
  maxUPpressure5        = scalar,  U08,    638,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 5th
  maxUPpressure6        = scalar,  U08,    639,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 6th
  maxUPpressure7        = scalar,  U08,    640,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 7th
  maxUPpressure8        = scalar,  U08,    641,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while upshifting to 8th

  maxDWNpressure1       = scalar,  U08,    642,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 1st
  maxDWNpressure2       = scalar,  U08,    643,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 2nd
  maxDWNpressure3       = scalar,  U08,    644,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 3rd
  maxDWNpressure4       = scalar,  U08,    645,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 4th
  maxDWNpressure5       = scalar,  U08,    646,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 5th
  maxDWNpressure6       = scalar,  U08,    647,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 6th
  maxDWNpressure7       = scalar,  U08,    648,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 7th
;  maxDWNpressure8       = scalar,  U08,    649,       "%",    -1.00000,    -100.00,     40,     90,        0    ; Max pressure while downshifting to 8th

changing the 90 values to 100, like this:

Code: Select all

 maxUPpressure1        = scalar,  U08,    634,       "%",    -1.00000,    -100.00,     40,    100,        0    ; Max pressure while upshifting to 1st
"Never wrestle with pigs. You both get dirty and the pig likes it." - George Bernard Shaw
flak monkey
Posts: 50
Joined: Sun Sep 21, 2014 11:28 am

Re: Maximum shift line pressure

Post by flak monkey »

Thanks Lance, I'll take a look at modifying the INI.
flak monkey
Posts: 50
Joined: Sun Sep 21, 2014 11:28 am

Re: Maximum shift line pressure

Post by flak monkey »

Do I need to do anything other than modify the ini in my tunerstuido project folder for this to work? Except changing the settings in the msq obviously.
Bernard Fife
Posts: 1696
Joined: Fri Apr 04, 2008 1:28 pm

Re: Maximum shift line pressure

Post by Bernard Fife »

No, I don't think you need to do anything else. Try it and see, though.
"Never wrestle with pigs. You both get dirty and the pig likes it." - George Bernard Shaw
flak monkey
Posts: 50
Joined: Sun Sep 21, 2014 11:28 am

Re: Maximum shift line pressure

Post by flak monkey »

Did it and it works fine... hadn't messed with the ini's before so wasn't sure
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