hquick
August 3rd, 2008, 12:40 AM
Reading a couple of threads and found some mentioning unusual shifting
http://www.performancetrucks.net/forums/showthread.php?t=422365
which lead to a HPT forum thread
http://www.hptuners.com/forum/showthread.php?t=19263
which lead to H0101.
According to the description:
The number of revolutions per kilometer of the transmission output shaft.
For manual vehicles, it is not used and is often set incorrectly.
For automatic vehicles, it is used by the PCM to determine the transmission shift speeds.
It will normally be consistent with the equation: H0101=H0102*H0104
Mine's a 4L80E so the above equation H0101=H0102*H0104 should apply....but doesn't.
In looking through alot of other tunes...seems it almost NEVER applies.
What gives?
I've heard this makes a BIG difference to shifting?
http://www.performancetrucks.net/forums/showthread.php?t=422365
which lead to a HPT forum thread
http://www.hptuners.com/forum/showthread.php?t=19263
which lead to H0101.
According to the description:
The number of revolutions per kilometer of the transmission output shaft.
For manual vehicles, it is not used and is often set incorrectly.
For automatic vehicles, it is used by the PCM to determine the transmission shift speeds.
It will normally be consistent with the equation: H0101=H0102*H0104
Mine's a 4L80E so the above equation H0101=H0102*H0104 should apply....but doesn't.
In looking through alot of other tunes...seems it almost NEVER applies.
What gives?
I've heard this makes a BIG difference to shifting?