Con verter tuning
06-06-2018, 03:52 PM
#1
Drifting
Thread Starter
Con verter tuning
2001 A4, Highway speeds, with cruise on in overdrive, with converter locked, what tells it to unlock? Throttle position, engine load, or map reading? Just want to be able to convey to tuner what I'm after. Thanks.
Last edited by itsonlyairandfuel; 06-06-2018 at 03:53 PM.
06-06-2018, 08:21 PM
#2
On these cars, it is throttle Position and Vehicle speed. Lock and Unlock are both controlled that way. One thing to consider is the trans shifting when dealing with TCC lockup. You don't want them to do it at the same time. Then you could get chatter, and then a shot transmission. Need to consider auto shift speed to work out the TCC lockup routines. Hope this helps out.
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itsonlyairandfuel (06-07-2018)
06-07-2018, 10:15 AM
#3
Drifting
Thread Starter
On these cars, it is throttle Position and Vehicle speed. Lock and Unlock are both controlled that way. One thing to consider is the trans shifting when dealing with TCC lockup. You don't want them to do it at the same time. Then you could get chatter, and then a shot transmission. Need to consider auto shift speed to work out the TCC lockup routines. Hope this helps out.
06-14-2018, 04:43 PM
#4
Le Mans Master
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St. Jude Donor '13-'14-'15
ALSO other things that will cause the converter to UNLOCK or to NOT LOCK is
1. The brake light circuit -Anytime you hit the brakes the converter will UNLOCK and will override all settings
2. Any MISFIRE whether real or false will prevent the converter from LOCKING
PS There are other converter settings beyond speed and throttle position that will help the converter to LOCK UP much more firmly--This will prevent low speed/RPM lock ups from chattering when the line pressure is so low
The table is called "pulse width modulation" Really helps a lot especially with a higher than stock stall---Stock settings are
MINIMUM 10%
MAXIMUM varies from 95 to 98%
Most tuners will set them like this
MINIMUM 90 %
MAXIMUM 99 %
These settings actually adds to the life of your TCC lock up clutch by preventing slow lock ups and slippage
1. The brake light circuit -Anytime you hit the brakes the converter will UNLOCK and will override all settings
2. Any MISFIRE whether real or false will prevent the converter from LOCKING
PS There are other converter settings beyond speed and throttle position that will help the converter to LOCK UP much more firmly--This will prevent low speed/RPM lock ups from chattering when the line pressure is so low
The table is called "pulse width modulation" Really helps a lot especially with a higher than stock stall---Stock settings are
MINIMUM 10%
MAXIMUM varies from 95 to 98%
Most tuners will set them like this
MINIMUM 90 %
MAXIMUM 99 %
These settings actually adds to the life of your TCC lock up clutch by preventing slow lock ups and slippage