G35 Sedan V36 2007- 08 Discussion about the 2nd Generation G35 Sedan 2007 - 08

Does the AT upshift automatically once it reaches redline?

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Old 10-02-2012, 11:20 PM
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Does the AT upshift automatically once it reaches redline?

I was just wondering does anyone know if the Automatic upshifts for you once you reach the redline (7500 RPM) in Manual mode? I never really tried it myself (don't want to risk wear or damaging the engine) so I was just wondering if anybody has experimented to find out...

Thanks.
 
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Old 10-02-2012, 11:24 PM
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i dont think automatic will ever cross redline. thats the point of automatic.
 
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Old 10-02-2012, 11:28 PM
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Originally Posted by Adil_G35
i dont think automatic will ever cross redline. thats the point of automatic.
I know that, but I was just wondering if it cuts the throttle or automatically upshifts for you like the new Kias I believe even in manual mode.
 
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Old 10-02-2012, 11:35 PM
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when i floor it it goes to 1 redline past 7500 then drops
 
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Old 10-02-2012, 11:42 PM
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The Automatic will not upshift in manual mode and will bounce of the limiter in the G
 
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Old 10-03-2012, 01:23 AM
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^ whs, iv personally tested this thinking it would but it just bounced back...
 
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Old 10-03-2012, 10:16 AM
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If you WOT to redline you'll reach the "soft limiter" where the ECU basically reduces the ignition timing and thus the RPM bounces. In M mode, the transmission won't shift until you do.
 
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Old 10-03-2012, 02:29 PM
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^ just to clear up things a little for the OP like Q8y_drifter said in M mode it wont shift until you do but the needle will keep bouncing off the redline it wont cross the redline though
 
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Old 10-03-2012, 03:13 PM
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It cuts the fuel at red line in manual mode, i mean i wouldn't cruise around just bouncing off of redline
 
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Old 10-03-2012, 03:30 PM
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i taken to 8k redline and it does bounce back car will start jerking weird and just stay at same level will not shift up by itself,

was too faded and was racing a TL on the 605 lol.. took him like nothing even after i f** up on the shifting ...
 
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Old 10-03-2012, 03:44 PM
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The fuel cut which is basically the "hard" limiter is set at 200rpm after the soft limiter from factory. You shouldnt be able to hit the fuel cut, as that is only there in case the soft limiter fails. Even though its not possible to hit the fuel cut on a stock tune, I wouldn't suggest anyone set the hard limiter at or before the soft limiter, since the fuel cut basically creates a very lean condition right at redline, which is not good for the engine.
 

Last edited by Q8y_drifter; 10-03-2012 at 03:48 PM.
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Old 10-03-2012, 03:52 PM
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Originally Posted by b-dRizZy
i taken to 8k redline and it does bounce back car will start jerking weird and just stay at same level will not shift up by itself,

was too faded.....
As he said, once the car is in full manual mode. It will wait for the user to change gears with the shifter or paddle shifter. I have done the jerk few times when you're in the city and you forget that you left it in manual mode.

Car usually goes up to 8K RPMS and if you don't shift on time. Car will give you a push back and rev like an angry Godzilla.
 
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Old 10-03-2012, 04:53 PM
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lmao yuuuuppppppp ^

then your like oh S**** hahaa
 
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Old 10-03-2012, 05:05 PM
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Originally Posted by Zomorg3
It cuts the fuel at red line in manual mode, i mean i wouldn't cruise around just bouncing off of redline
Originally Posted by Q8y_drifter
The fuel cut which is basically the "hard" limiter is set at 200rpm after the soft limiter from factory. You shouldnt be able to hit the fuel cut, as that is only there in case the soft limiter fails. Even though its not possible to hit the fuel cut on a stock tune [...]
^ whs, iv actually seen this tested when i was buying my car the dealer only had AT on the floor for test drive and he floored the G in M mode and the rpm needle bounced back multiple times from redline to like 7k and back to redline until he let off the pedal with no fuel cut at all.

But like Q8y said its not a recommended thing to do ever, the dealer was just trying to convince me to buy the AT off the lot rather than order the MT showing me how the AT in M mode is just like the MT and wont shift automatically
 
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Old 10-04-2012, 08:58 AM
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Get a stick.

1. Its a stick.period.
2. Will take horsepower better less drive train loss
3. Won't have nearly as many transmission problems as some of us had
4. Better mpg with stick
5. Did I say it was stick?

and when u hit red line it does cut the fuel supply letting the RPMS fall until its safe.
 


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