Ford Focus Forum, Ford Focus ST Forum - View Single Post - Those not happy with the 12b37 update
View Single Post
Old 09-01-2012, 12:22 AM   #9
Kabigon
Focus Fanatic
 
Join Date: Jul 2011
Fan#: 88299
Location: Torrance, CA
What I Drive: 2012 sterling gray Titanium

Posts: 3,176
Points 4,072, Level 40
Points: 4,072, Level: 40 Points: 4,072, Level: 40 Points: 4,072, Level: 40
Level Up 61% Completed
Level up: 61% Level up: 61% Level up: 61%
Forum Activity 29%
Activity: 29% Activity: 29% Activity: 29%
FF Reputation: 11 Kabigon Great Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by Timthom62 View Post
Part of the benefit of the dual clutch transmission is that when one shaft is engaged, the PCM and TCM have already enabled the next expected gear on the disengaged shaft. So if you're in 5th and accelerating, 6th gear is already engaged on the opposite shaft and waiting for the clutch to engage. The point being to prevent the lag between shifts that was normal with a standard automatic transmission.
The algorithm for pre-selecting the next gear is not quite so simple.

For example, if you are in 5th gear, 6th gear will not be pre-selected until you hit ~74 MPH.

Gear selection (for the next gear) often takes place at the time of the upshift.
Kabigon is offline  
    Reply With Quote