GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

what is a 2-step and how does it work?

Old Aug 16, 2009 | 11:28 AM
  #21  
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if you had a super rich AFR, which is what you would have if you dumped 4 cylinders with fuel but no spark, it will spike the EGTs very high. and that in turn will make the turbo hot and help it build boost.

i finally got my head wrapped around this.



you could only increase the two-step rpm up to the point of absolute rpm flash on your converter, right? otherwise, you would push through your front brakes, right?

from what i read about trans-brakes, you can only rev up to what your converter will allow, then it would start to push through the brakes.
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Old Aug 16, 2009 | 11:33 AM
  #22  
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you'd break the tranny before it will push through the brakes. You're thinking of foot braking which is much different. A trans brake holds the transmission from moving, which I believe it does by activating the forward and reverse clutches at the same time, binding the transmission until you release the button. It creates ALOT of heat.
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Old Aug 16, 2009 | 11:36 AM
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Originally Posted by nightrunner
from what i read about trans-brakes, you can only rev up to what your converter will allow, then it would start to push through the brakes.
theres no pushing through your brakes on a T-brake. your actually not even on the brakes. you pull up to the line, press a button, let off of the brakes and floor it. the motor will rev to the limit of the torque converter if you dont have a 2step controlling it.

what a T-brake does is put your transmission and drive and reverse at the same time, essentially locking the transmission up. when you let loose the button it takes it out of reverse and all hell breaks loose.
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Old Aug 16, 2009 | 11:37 AM
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I type faster than you
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Old Aug 16, 2009 | 11:41 AM
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good job on making fun of a guy with only 7 fingers. i do the best i can.
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Old Aug 16, 2009 | 11:53 AM
  #26  
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ok it wont push through the brakes but it will only rev as high as the converter will allow it to slip.

i know what a t-brake does, dont know why i was thinking of foot brakes, lol
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Old Aug 16, 2009 | 12:12 PM
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before i hop off the net, i was just kidding about having 7 fingers...i have a full 10 fingers, im just not as fast of a typer as scott i guess lol.
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Old Aug 16, 2009 | 12:18 PM
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Originally Posted by TXsilverado
before i hop off the net, i was just kidding about having 7 fingers...i have a full 10 fingers, im just not as fast of a typer as scott i guess lol.
I was about to ask if you weren't counting your thumbs as fingers but figured I should probably stay out of that one
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Old Aug 16, 2009 | 12:20 PM
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A 2-step will also reduce the life of your turbo significantly the more you use it. Just FYI
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Old Aug 16, 2009 | 12:25 PM
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Originally Posted by Spoolin
A 2-step will also reduce the life of your turbo significantly the more you use it. Just FYI
why? how?
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