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Transmission shifting with hot tune  RSS feed
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Cetane Man

Joined: 23/02/2010 09:20:48
Messages: 4
Just got the hot tune and am enjoying getting used to the new character of this jeep.
I don't yet have enough miles to say where fuel economy will be but am optomistic.
Had a chance today to try the newfound power out and did a WOT take off from about
five mph rolling start and it actually broke the tires loose a little , shifted to second
very soon and then hit the rev limiter and cut power before it would shift to third. Has this
happened to others and will the transmission learn to shift sooner with the quicker
revving engine?

2005 CRD Sport, GDE Hot tune, magnaflow catback, euro TC

Joined: 10/07/2009 07:25:47
Messages: 374
Location: Southeast Michigan
It could have been a slow shift, this sometimes happens with the transmission, but it is not common. Did you try the same acceleration a few times to check if the shift is consistent? We usually see the 2-3 shift between 3900-4100 rpm. No re-learn is necessary for the transmission controller, unless you just had it flashed. Let us know how this develops.

Thanks, GDE
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