Up shifting problem ?

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alollini
Posts: 58
Joined: Tue Dec 11, 2012 1:49 am

Up shifting problem ?

Post by alollini » Thu Jan 31, 2013 5:55 am

I notice two very different up shifting conditions and results, and i think it should be all the same.

My problem is i can't up-shift in a clean way above "5500-ish" rpm.


I notice a behavior where the rpm is kept for a second while shifting at low rpm, and this is cool while driving like grand-pa and coasting/cruising = perfect.

At higher rpm the behavior is completely different, with impression of throttle closing completely, fuel cut, serious shake.

I tried to upshift faster and faster (maybe i am not fast enough ?) but anyway i try, there is still that BANG feeling like i hit a rock with two front weels.
the car is loosing momentum when i upshift at high rpm, and that is frustrating.

shifting is sooo smooth at lower rpm, i think there is something wrong.

should i let some throttle while up shifting ?

is there a way to fix that ?

I see "Overrun fuel cut delay"
1 => 70
2 => 70
3 => 70
4 => 70
5 => 70
0 => 60

this problem may refer to rev hang, but i am not sure: i have read the posts about TSX, and i don't think this applies here.


I don't know exactly where is the limit between smooth and rough up shifting.
Team CR-Z Youtube Videos here => http://www.youtube.com/playlist?list=PL127E8C02C6B25D4B&feature=plcp
CR-Z GT White "Blue Inside"

alollini
Posts: 58
Joined: Tue Dec 11, 2012 1:49 am

Re: Up shifting problem ?

Post by alollini » Sat Feb 02, 2013 11:28 am

tried that :
"Overrun fuel cut delay"
1 => 80
2 => 80
3 => 80
4 => 80
5 => 60
0 => 10

ok, i have no more fuel cuts between gear changes. But there is still that inevitable "bang", i suppose it is just normal engine shake due to clutch closing and rev difference due to gearing.


do you keep some throttle while shifting ?
Team CR-Z Youtube Videos here => http://www.youtube.com/playlist?list=PL127E8C02C6B25D4B&feature=plcp
CR-Z GT White "Blue Inside"

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