XF and XFR ( X250 ) 2007 - 2015

SDD Programming- can you alter application rates?

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Old Feb 26, 2023 | 03:10 PM
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Default SDD Programming- can you alter application rates?

Greetings,
Has anyone used SDD to program a DSC module? I have changed the fluid etc. But I have a heck of a time at the track getting that Posi-trac launch and it kills my 60ft and et's. Traction control kills it from launch as well.
So im wondering if there are parameters one can alter through SDD or if its pretty much "push button to program module!" and that's all you get. Thanks in advance Jaguar friends!
 
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Old Feb 26, 2023 | 04:23 PM
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In my hellcat, if I hold the traction control button down to shut it off partially. for 5 seconds (until it chimes) it shuts off all traction control related items. It shut off more than just pressing the traction button momentarily which only shuts it down partially

another trick was to remove the fuse for the ABS unit
 
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Old Feb 26, 2023 | 04:30 PM
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Thank you. If you push it down a couple of seconds it goes into trac mode..hold it for about 13 seconds it goes off...the issue is the electronic differential seems to work almost open in this mode where ironically the engine is capable of all power available with what appears as the least traction. So if that were adjustable somewhat....
 
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Old Feb 26, 2023 | 05:50 PM
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gotcha! I have a S type R so i dont have that snifty differential. Im peglegged all the time. I see why youd complain. there should be a way tpo keep the differential locked into posi but turn off the traction control portion. But since I dont have thyat car or the schematics or any info, I cant really comment on if its possible to rig up a switch to the differential to keep it locked when then traction control is off. If the differential just uses a straight 12v signal, its easy. but I dont know whats involved
 
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Old Feb 26, 2023 | 06:09 PM
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Originally Posted by Aarcuda
gotcha! I have a S type R so i dont have that snifty differential. Im peglegged all the time. I see why youd complain. there should be a way tpo keep the differential locked into posi but turn off the traction control portion. But since I dont have thyat car or the schematics or any info, I cant really comment on if its possible to rig up a switch to the differential to keep it locked when then traction control is off. If the differential just uses a straight 12v signal, its easy. but I dont know whats involved
You think like I do..simply apply it via a switch but alas its always more complicated lol. When you replace the electric motor that applies it , it has to been synchronized/calibrated with SDD, so that begs to question if I alter that original default position with my own application of power (one switch to kill computer signal, one to apply/un-apply clutch pack...will it reset to the correct position when powered back up? It seems it may have some hall effect sensor...if you can tap into that a light for neutral position it may work. I have a spare diff and I have a friend willing to chase the electrical portion of the diff.
 
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