ren274u

So far i have a JLT2 and Xcal on my 06gt auto. When i leave the car in D, my my et is always 3/10 slower than when i shift it my myself, an thats not always consistent. So i want the car to shift around 6300 rpm, now when i go to adjust the shift points on the xcal its not by rpm its by MPH, do i have to figure out the mph the car shifts at in each gear, and then find the mph i want it to shift at by looking at rpm's and raise it by the difference? Thanks alot

don_w

When I got my X2 from Doug, I had him set my WOT shift points at 6250rpm. If you don't have a tuner who will provide you with a revised xtr file, then yes, I believe you'll need to convert to mph and adjust it that way. What a PITA.

ren274u

yeah i have brenspeed and he doesnt sent xtr files, sucks. I played around with it today, and even max them at at +7 and it didnt even change a thing. Looks like ill be calling brent up

70MACH1OWNER

When I had my Predator I tried to adjust the shift points also. I moved them all up by 5 mph. I also could not tell any difference from stock. I now have Lidio's from AA XCAL2 tuner with his program and he adjusts the shifts points upward slightly. I can now tell the difference.

Cleveland

How are you guys having trouble? There is an option for increasing or decreasing the shift point based on RPM. Changing the MPH doesnt do a single thing.

My WOT shifts are @ 6400 (set by DTP) but I could back it down to whatever, user selectable max is 6200 in the Diablo.

-Dan

70MACH1OWNER

Well Dan, I sold my Pedator U7140 tuner back in Nov. and bought the SCT XCAL2 from Lidio @ Alernate Automotive. When I had the Predator I tried to adjust the rpm that my auto shifted at and the Predator adjusted by MPH not RPM in the user adjustable parameters. See link http://www.diablosport.com/U7140.php See adjustable parameters in #7. It says RPM shift points-ADJUSTABLE VIA MPH. As I remember it only allowed you to raise shift points for the automatic by a max. of 7 MPH not RPM. I tried to do this with mine by 5 MPH and personal I couldn't tell any difference from stock. I was only using the Diablo canned tune for the C&L intake not anyones custom tune.
As far as my SCT XCAL2 goes I have not checked into how it adjusts or if I can do it on my own or if Lidio has it locked out.
Maybe you can adjust yours because of your custom tune from DTP??
Scott

don_w

I used a Predator for a while too, and somewhere along the way, there was a firmware revision that allowed RPM adjustments and not just MPH adjustments. I was able to tweak mine as needed by rpm and it worked fine. But, like Dan said, the max allowable was 6200 rpm with the Pred. That's why I had Doug set mine to 6250 when I switched to the X2. I haven't seen a need to change those yet.

70MACH1OWNER

Hummm! At the time I was running R17 on my Predator. If a later rev. changed the adjustment to RPM instead of MPH I didn't know that. Also, if what you say is true than Diablo needs to undate their website. It still says adjustable via MPH. Do you know how the SCT XCAL2 adjusts?? The directions that came with my XCAL2 su*&S. I have to give Diablo credit for one thing their instruction booklet was top notch! Can't say that about my XCAL2.

Scott

GIG4FUN

Wondering here..... When the shifts are made,.... and they are above the torque curve when they hit.... I think the car would be slower accelerating than if it stayed in the torque power band when hitting the next gear... I think rather than making all the shift points that they shift at I would hit the shift they land at. I am thinking shift at 5500 and hit the sweet spot on the torque 4500 rpm. Then the car would pull more I think.

How many rpm's are between gears in the auto?
Is max torque at 4750?
When does the torque fall off?
Is it a flat curve or spiked?

Your thoughts?

don_w

I agree about the Predator being more user-friendly than the X2. I've been saying that for a long time. And I don't recall which revision it was (r22 for the U7140 maybe? )


<!--QuoteBegin-GIG4FUN@January 21, 2006, 11:33 AM
Wondering here..... When the shifts are made,.... and they are above the torque curve when they hit.... I think the car would be slower accelerating than if it stayed in the torque power band when hitting the next gear... I think rather than making all the shift points that they shift at I would hit the shift they land at. I am thinking shift at 5500 and hit the sweet spot on the torque 4500 rpm. Then the car would pull more I think.

How many rpm's are between gears in the auto?
Is max torque at 4750?
When does the torque fall off?
Is it a flat curve or spiked?

Your thoughts?

Quoted post

[/quote]

When my shift points were lower, the car seem much more sluggish just after the upshift. I think it was coming below the power band, and then had to get back up there. With the shift points set higher, it was in the power band after the upshift, so it pulled harder.

sranger

Yep,

I was quite dissapointed to find out that my Xcal2 does not allow me to change anything....

It has version 1.3 firmware in it and that versions does not allow you to do anything unless the dealer specifically programs it to have that feature... And you deler has to be using the V 3.0 or higher of their tuning software...

So, I cannot fix the shift problem myself .

It is very close to false advertising from SCT if you ask me....

70MACH1OWNER

:angry: :angry: :angry: :angry: That doesn't make me very happy.

ren274u

If i get the xtr file, can i then open it in extreme tune and it should work right?

spyder7724

only if your tuner makes an xtr file for you, i've tried to do mine and it's not accessable to me. only my tuner. some tuners will give you an xtr file so that you can adjust things yourself, the xcal2 does do the shift points by mph also. that part sucks. it is false advertising on the part of SCT. i was under the impression that i could change lots of functions.i can't.

70MACH1OWNER

George,
I have the XCAL2 from Lidio @ Alternate Automotive. So are you saying that a special tune like Lidio's would lock me out of the user adjustalbe parameters? I am just trying to understand. My unit is the way Lidio sent it to me. So Lidio or SCT would have to load in the new file to give me back the adjustable parameters?
Scott

70MACH1OWNER

George,
I did talk to Lidio a couple of weeks ago about turning off the TC and that is when he told me that it didn't work and SCT was having issues with the adjustable parameters in the XCAL2 unit. Wonder what the truth really is???
Scott