2014 Ford Mustang 5.0 automatic trans shift point assistance

[Bill@HPTuners]

mustangwot4.hpl

billstranstunev1.5.hpt

Ok so I was trying to do some WOT shift point adjustments but the vehicle just won't respond to the changes.

I've gone so far to set my normal wot shift rpm to 7100 for the first 3 gears. I've set the normal shift schedule table to shift at 42mph at wot & it still shortshifts at 5700rpms & 34mph at the 2:17 mark in the log. Ultimately the shift ends up occurring at around 6400 rpms & 39mph which is still well below the commanded.

TIA for assistance

BTW combination is
2014 Ford Mustang V8 5.0
Kooks long tube headers
No cats
Xpipe
magnaflow over axle exhaust.
Stock intake & virtually everything else
A6 with 3.15 gears, stock 19" rubber

[Jn2]

mustangwot4.hpl

billstranstunev1.5.hpt

Ok so I was trying to do some WOT shift point adjustments but the vehicle just won't respond to the changes.

I've gone so far to set my normal wot shift rpm to 7100 for the first 3 gears. I've set the normal shift schedule table to shift at 42mph at wot & it still shortshifts at 5700rpms & 34mph at the 2:17 mark in the log. Ultimately the shift ends up occurring at around 6400 rpms & 39mph which is still well below the commanded.

TIA for assistance

Your tire and diff data correct for what you are running on the car?

[Bill@HPTuners]

correct, stock 3.15 gears & oem wheels/tires. I made several revisions to the shift points first I bumped just the last line to 42, then the last two cells, then the last 3, each time with the same result ie short shifting at right around 34mph(you can see the commanded gear change). I also kept bumping the wot shift rpm from 6800 to 6900 and eventually to 7100. Nothing seemed to work. I wonder if its something else in the tune that interferes with the shift patters from happening the way you command that I'm just missing.

[murfie]

Possible the traction control shift points. The MPH matches up pretty close.

[Bill@HPTuners]

Possible the traction control shift points. The MPH matches up pretty close.

It does it with traction control on or off. Additionally I don't see any traction control specific shift tables. I wouldn't consider 8mph off close.

With older gm's, which is what I'm most familiar with, the ecm had to reach two "markers" in order to command the shift, the speed marker & the rpm marker. Considering the RPM marker is set to 7100 and its shifting at 6300-6400 in first I'd say something is amiss.

[murfie]

traction control.PNG

Some times it takes more than pushing or holding the button to disable the traction control in these newer fords.

[jchambers]

How are you shifting the car? Are you in sport mode? O/D delete? Manual shift authority? There are literally at least eight modes of transmission operation and these are not all mapped just yet in HPT. If you're leaving by stabbing the throttle quickly, there is a fast response mode (triggered by pedal rate) that may be active. Eric and I have talked about this as being one of the reasons it is so difficult to set up a consistent 'dyno mode' for the 6R80.

[Bill@HPTuners]

thank you, I'll look into it and report back, didn't feel like just flogging away anymore and figured I'd see what info was out there.

[Bill@HPTuners]

Wish there was a dma pid that could be logged that would tell you which shift schedule it was going on at any given time, would definitely have helped troubleshoot in this case.

[Witt]

How are you shifting the car? Are you in sport mode? O/D delete? Manual shift authority? There are literally at least eight modes of transmission operation and these are not all mapped just yet in HPT. If you're leaving by stabbing the throttle quickly, there is a fast response mode (triggered by pedal rate) that may be active. Eric and I have talked about this as being one of the reasons it is so difficult to set up a consistent 'dyno mode' for the 6R80.

To add a little to this it could be torque reduction related since it seems inconsistent or be blending in some type of temp cooling mode.

There is a Cooling Reduction part throttle shift table by mph but the one for WOT in CR mode is missing in this strategy. It may be hitting an exhaust temp limit possibly?

[Bill@HPTuners]

How are you shifting the car? Are you in sport mode? O/D delete? Manual shift authority? There are literally at least eight modes of transmission operation and these are not all mapped just yet in HPT. If you're leaving by stabbing the throttle quickly, there is a fast response mode (triggered by pedal rate) that may be active. Eric and I have talked about this as being one of the reasons it is so difficult to set up a consistent 'dyno mode' for the 6R80.

Turned advanced traction control off, in D and go. KISS. Unfortunately Ford didn't get the memo on how that acronym is supposed to work. I've very curious to know if anyone has gotten their 2013-14 auto to actually shift over 6500rpms in 1st gear in D. From what I gather they make peak hp at 6500-6700 in stock form so shifting at 7k seems like the logical thing to do for best times. At this point I just feel like I'm banging my head against a wall.

[luisdavid11]

try disabling rpm anticipated shifts under the general tab

[Jn2]

Turned advanced traction control off, in D and go. KISS. Unfortunately Ford didn't get the memo on how that acronym is supposed to work. I've very curious to know if anyone has gotten their 2013-14 auto to actually shift over 6500rpms in 1st gear in D. From what I gather they make peak hp at 6500-6700 in stock form so shifting at 7k seems like the logical thing to do for best times. At this point I just feel like I'm banging my head against a wall.

I have one shifting in high RPM in first gear, boss manifold car with full exhaust....lemme fish the file out and I'll post the values for you
'

[Bill@HPTuners]

try disabling rpm anticipated shifts under the general tab

Thank you, I might give this a try, makes some sense

I have one shifting in high RPM in first gear, boss manifold car with full exhaust....lemme fish the file out and I'll post the values for you
'

TIA

[luisdavid11]

sounds good. should work, this is how i set up these cars and have never had issues with short shifting.

[wbt]

sounds good. should work, this is how i set up these cars and have never had issues with short shifting.

There is some clarification to this. Disabling allows you to manually set the RPM when the is COMMANDED at WOT. Be sure to set the RPM point lower so when the shift completes it will not be beyond where intended.

Additionally, the MPH needs to be set appropriately which means the tire revs per mile needs to be correct. It all ties together.

[Jn2]

Anticipation is still on for this one, WOT RPM is set to 7600rpm, looking at the logs the shifts occur at(diff and tire data is set up correctly)

1->2: 7200
2->3: 7200
3->4: 7400
4->5: 7200

mph.PNG

[Bill@HPTuners]

Anticipation is still on for this one, WOT RPM is set to 7600rpm, looking at the logs the shifts occur at(diff and tire data is set up correctly)

1->2: 7200
2->3: 7200
3->4: 7400
4->5: 7200

mph.PNG

What I don't get is if you set the WOT rpm for each gear to 7600 rpms, why doesn't it shift at 7600rpms? Just doesn't make sense to me in comparison to every gm application I've ever tuned.

[apd252]

Mine has been doing the same thing since I got the car tuned. Last tip I was given was to raise the mph in the traction control tables. Havent got to the track since then to test that out.

[GHuggins]

Bill, if you don't have this fixed yet I have a 14 that shifted rather nicely - it was a roush tune, but should still work for you / I did have to change things a little to make it shift sooner - kept hitting the rev limiter before it would shift otherwise, but I can send them to you or whatever you prefer.