What Is Rev Hang?

VitViper

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An unscripted explanation of rev hang with real world examples to demonstrate what it is and the why with live examples.




 

360glitch

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Thread pruned. The purpose of this thread is to share this video. If you want to argue with someone back and forth, please do it via PM. :)
 

17siturb0

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There’s no argument, Vit backs up his claims always. Other guy was spreading information that is incorrect. Appreciate the video nonetheless!
 

jetsko84

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Rev Hang is ruining my driving experience. I don't have the extra cash for a tune so that I can remove this so I'm kinda bummed.
 

360glitch

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Rev Hang is ruining my driving experience. I don't have the extra cash for a tune so that I can remove this so I'm kinda bummed.
Eh, if you are talking about a CTR there is not a tuner to remove it yet anyways. Start saving now and you may be ready once a solution hits the market. :thumbsup:
 

jetsko84

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No, We have a CTR and an EX-T. Don't notice it in the CTR
 

dallasjhawk

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So seriously, why was the bs being spread around in the "knock" thread by a certain vendor allowed to stay but this mess was removed? I guess Im having a hard time understanding how decisions are made as to what stays. There was good info in Vits replies that are now gone
 
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360glitch

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So seriously, why was the bs being spread around in the "knock" thread by a certain vendor allowed to stay but this mess was removed? I guess Im having a hard time understanding how decisions are made as to what stays. There was good info in Vits replies that are now gone
Initially the posted was closed and left as is. The OP requested it instead be pruned as you find it now. Feel free to report any other posts that you feel need reviewing.
 
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dallasjhawk

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Initially the posted was closed and left as is. The OP requested it instead be pruned as you find it now. Feel free to report any other posts that you feel need reviewing.
Thanks bud! Appreciate the response. Moderate on my brother!
 

davemarco

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Loving the rev hang delete thus far! I've only noted one oddity thus far - even when I let up off the throttle super gradually, I still get a small jolt and a small "double shake" indicating a sharp throttle cut off. It's as if it's cutting off sooner than it should, and as a result I'm getting that small jolt. This is not an issue when stepping on the clutch -- only when letting up off the throttle (even extremely slowly). For reference, I am on standard throttle padding (which I assume = none).

On my old "rev-hang-less" Prelude, I would get this behavior if I were to suddenly let off the throttle, but a gradual liftoff produced a smooth transition to vacuum. On the rev hang delete for the SI, I cannot seem to achieve this level of smoothness.

Is this what everyone else is experiencing as well? I'd try a softer throttle padding, but I don't want to lose the quicker rev drops that I'm getting right now. The heavier flywheel already causes the revs to drop slower that I'm used to from the 'lude, even with the rev hang delete.

Thanks in advance for the perspective fellow 10th Gen'ers!
 

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Rev hang disable is only active when the ECU sees zero TPS input. You are then transitioning to full vacuum when it sees zero TPS so you will feel the transition. Add to that fuel cut based on whatever settings you have currently entered.

Prelude was throttle by cable, so there's no comparison there!
 

davemarco

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Rev hang disable is only active when the ECU sees zero TPS input. You are then transitioning to full vacuum when it sees zero TPS so you will feel the transition. Add to that fuel cut based on whatever settings you have currently entered.

Prelude was throttle by cable, so there's no comparison there!
That all makes sense. Glad it's normal - I'll experiment with different padding settings to see if one of those does the trick.

Thanks!
 

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That all makes sense. Glad it's normal - I'll experiment with different padding settings to see if one of those does the trick.

Thanks!
Not a problem. Padding will definitely lower the throttle command so you may find it a bit smoother, but it'll also dumb down the take off from a stop so keep that in mind!
 

davemarco

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Not a problem. Padding will definitely lower the throttle command so you may find it a bit smoother, but it'll also dumb down the take off from a stop so keep that in mind!
Fair point - I'm assuming that using the lightest padding option will still significantly less dumbed down than stock though, correct?
 

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