Drivetrain Questions and info regarding transmissions, clutches, etc.

5AT Tiptronic: Shift when I say so!

Old Feb 2, 2012 | 10:04 AM
  #16  
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Originally Posted by 3truman
Sound to me like maybe a swap to 6mt is what he really needs.............
I'm looking into it, actually. Just got to find a shop who will do the work for a reasonable price.
Or a certain DIY thread that will actually post up a DIY........


I'm not a dick, nor do I need a new car. I'm trying to get this to run as well I as I can get it before I sell it when the right GT-R comes out. Then again, if asking you to read my post before you comment is dick, then I may very well be guilty.
 
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Old Feb 2, 2012 | 07:32 PM
  #17  
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This is really weird as i have the Transgo kit and i never see a lag in shifting...as soon as i move the shifter its bam in the next gear.
 
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Old Feb 2, 2012 | 07:36 PM
  #18  
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my car shifts exactly when I tell it to, but I also have some extra 3rd pedal next to the brake..
 
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Old Feb 2, 2012 | 08:15 PM
  #19  
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Originally Posted by herrschaft
^I have Osiris
Not only do I notice lag, but sometimes it seems like the power drops off for a second around 4,000/4,500rpm, then continues on as normal. I still have the stock transmission though so I'm not sure if my tranny is slipping or if its the tune. The AFR was normal when this happens. Anybody experience this before?

Power drop is not normal.

With Osiris they can modify the torque management,but if you set it too high or inccorectly It will make downshifting very slow iirc

It is map switchable so you can have one map that can up shift fast
 
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Old Feb 2, 2012 | 08:17 PM
  #20  
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Originally Posted by Quimby
my car shifts exactly when I tell it to, but I also have some extra 3rd pedal next to the brake..
This discussion is for those that are actually faster then a GT500

On a serious note though, I wish I would only have to spend $1K to prepare a 6MT for the power I want compared to $4K+ for a built 5AT.
 

Last edited by herrschaft; Feb 2, 2012 at 09:23 PM.
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Old Feb 2, 2012 | 08:21 PM
  #21  
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Originally Posted by thescreensavers
Power drop is not normal.

With Osiris they can modify the torque management,but if you set it too high or inccorectly It will make downshifting very slow iirc

It is map switchable so you can have one map that can up shift fast
I will be going for a retune in the next couple of months so hopefully that will fix it. Normally my downshifts are quick unless I hit the limiter. There was a TT 7AT G37 there that was doing the exact same thing as mine around the same RPM, both of us were tuned at the same shop too. So I'll have to see if I'll be going there again.
 
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Old Feb 2, 2012 | 08:29 PM
  #22  
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Wow a ghost from the past. Glad to see you still fooling with the car.
 
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Old Feb 2, 2012 | 09:10 PM
  #23  
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Don't believe it if you want but it's your loss.

My SxExCx grounding kit worked really well with my G.
 
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Old Feb 2, 2012 | 10:36 PM
  #24  
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Originally Posted by herrschaft
I will be going for a retune in the next couple of months so hopefully that will fix it. Normally my downshifts are quick unless I hit the limiter. There was a TT 7AT G37 there that was doing the exact same thing as mine around the same RPM, both of us were tuned at the same shop too. So I'll have to see if I'll be going there again.

Should be noticeable on the dyno if there is a power drop, so if it happens on the dyno they can see it and try to fix it if it is software/tuning issue
 
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