Thread: Downshifting
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Old Mon, December 15th, 2008, 12:41 PM
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The TC unlocking when letting off the throttle is a means to thy to help improve fuel economy by letting the engine RPM drop down during coasting. I know it may seem a little "busy", but it's actually better in the long run because it takes negative load off the engine and transmission. The only thing it's not good for is if you need engine braking, although a gasser isn't going to be good for that anyway.

For what it's worth, we've reduced the amount of time for the converter to relock and all that we ended up with was the infamous "shudder" on tip-in on certain vehicles. What's irritating is it doesn't do it on every vehicle.

One thing that has been requested was to allow more throttle/load before the converter unlocks, particularly in those situation where you're going across an overpass or up a slight grade. I am addressing those requests and as soon we get something that we feel comfortable with, we can get include that in the tuning. It's tricky getting the right combination of converter hold going up a small hill versus quick release for passing or accelerating.

Let me know if you have any other questions.

Take care.
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Last edited by Power Hungry; Mon, December 15th, 2008 at 12:59 PM.
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