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alright, helped a buddy try and sort out a problem with his car. still had stock 2.73 gearing in the program but had put in 4.10's.
when i put in the 4.10's and the stock 26" tire, it came up with a "MAX trans scalar" error i think it was and readjusted down to a 25.7" tire. What causes this and what can i do to fix it? it's in an automatic.
Chris
bueller?
I think I know why but I'll wait till somebody else tries to answer..
Look like there is some sort of issue w/ this table. There is another person experiencing similar issue....
Sorry, missed this one...Quote:
Originally Posted by z28kid98
What were your Engine PPM, Trans Scalar and Input PPM before the change?
And what is the OS ID?
OS ID = 9381344
Engine PPM = 44253
Trans Scalar = 36.8799
Input = 7812
That was what was listed when the stock 2.73 gearing was listed in the "previous" box and i input the 26" previous tire. then put the 4.10's and stock 26" tire give it the max engine PPM error and it adjusts to a 25.7 height. and then these values:
engine ppm = 65535
trans scalar = 55.2607
input = 7812
yeah your engine PPM is maxing out (it's trying to set to 66460, but the max is 65535), thats why the error.
the result is that your trans should still shift at the right MPH but your cluster will be out by about 1%.
Please email your binary to us at [email protected] and we'll see if there is any possible workaround to this issue.
Chris...
I'm a little dumb about this, so what exactly do you need me to email you? :)
Also, the friend's trans is a bit messed up. just not working correctly
Chris
email the .bin file please :)
what do you mean the trans is messed up?
it picks and chooses whether it wants to actually engage when it shifts to 2 or 3 and never really catches in 4th.
and about the .bin, i feel like a moron. i shoulda known that one :) haha i'll be emailing you the original tune that i saved. NOT the one after i changed the gearing. that way you can input the gearing and see exactly what it does.
Chris
email was sent....
got it, thanks.
I also received an email from someone else, saying that other programs have a similar issue and according to them it can't be fixed. Nevertheless, i'll see if anything can be done...
:cheers:
65535 (or 65536) may be a GM hard limit. Maybe your
bud needs to go up a step in tire size just to make the
bits happy. :P
0xFFFF (65535) is the limit. Again, this only affects the speedo calibration, not the trans shifting. I doubt you will be able to change this without recalibrating the cluster itself.
Alright, I appreciate it!!!
Chris