"Honda's Maddening Rev Hang" - 10th Gen Civic Forum
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post #1 of 20 (permalink) Old 11-16-2016, 09:45 AM Thread Starter
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"Honda's Maddening Rev Hang"

Road and Track does a First Drive of the new hatchback:

https://www.roadandtrack.com/new-cars...k-first-drive/

Direct quote from the article:

Not that the six-speed manual is perfect—Honda's maddening rev-hang on upshifts is here in a big way. Shifting near redline on hard acceleration, the engine sometimes surges for a full second with your foot off the accelerator and the clutch depressed.

I drove an SI way back in '08, and immediately noticed the "rev hang" with the "fly-by-wire" setup. You would think that in the years since, the programmers could alleviate this, but I guess it's just too hard. I prefer the lighter coupe over the hatchback, but the preferred drivetrain (for me) is the same - 1.5 turbo with 6MT. Usually there is some "method to the madness" for such weirdness as the rev hang, but it has eluded me...and Honda, it appears.

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post #2 of 20 (permalink) Old 11-16-2016, 12:29 PM
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Most likely they know what to do to fix it... but it's possible that the benefits are outweighed by negatives such a change might make. I'm not an expert, but if there was a logical fix, that didn't cause other problems, honda would've done it on the 10th gens i think.
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post #3 of 20 (permalink) Old 11-16-2016, 12:57 PM
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Most likely they know what to do to fix it... but it's possible that the benefits are outweighed by negatives such a change might make. I'm not an expert, but if there was a logical fix, that didn't cause other problems, honda would've done it on the 10th gens i think.
Usually that's the case especially when it wont impact the bottom line since at the end of the day this wont be a deal breaker for the many out there. Instead it's something most people will live with til a fix comes out. I sure wouldn't mind waiting.
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post #4 of 20 (permalink) Old 11-16-2016, 01:13 PM
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Don't worry, Hondata Flashpro will help this go away.
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post #5 of 20 (permalink) Old 11-16-2016, 03:21 PM
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probably some sort of emissions thing.
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post #6 of 20 (permalink) Old 11-16-2016, 04:14 PM Thread Starter
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Don't worry, Hondata Flashpro will help this go away.
LOL - it also makes $700 go away! Then again, that's probably cheaper than fabricating a mechanical direct linkage to the throttle body, and just bypass the ECU, which may not be possible with DI. Curious - how does the Flashpro get rid of it? What parameter(s) does it change? Would Hondata sell a stripped down (cheaper) version that would get rid of the hang, without all the other bells and whistles? Curious minds want to know.

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post #7 of 20 (permalink) Old 11-16-2016, 04:55 PM
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There is a setting in Flash Pro that deals with rev hang.But Flash Pro also will unlock more HP on the 1.5-T.This issue was a problem with the 12 SI but after Vitaliy tuned my SI the rev hang was gone plus extra ponies.
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post #8 of 20 (permalink) Old 11-16-2016, 06:40 PM
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This is how the buddy club Throttle Cable Booster worked.

"This device helps alleviate throttle lag the DBW systems typically expierence. On the dyno, we have noticed that at full throttle on DBW systems, the throttle plate is not fully opened at 100% WOT(wide open throttle). Like a traditional "throttle cable" based system, when you floor the gas pedal, your throttle plate is opened 100%. On a DWB system, we are seeing a common percentage of 90-94% on WOT. This unit will correct this and allow you full potential for your DBW equipped vehicle. No more swapping back to a throttle cable based system. "

As DBW is computer controlled, you can set the perimeters on the TB differently.
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post #9 of 20 (permalink) Old 11-16-2016, 06:59 PM
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Rev hang is a ECU influenced condition as far as I know.
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post #10 of 20 (permalink) Old 11-16-2016, 09:48 PM Thread Starter
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This is how the buddy club Throttle Cable Booster worked.

As DBW is computer controlled, you can set the perimeters on the TB differently.
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Rev hang is a ECU influenced condition as far as I know.
You both are correct, it's entirely software driven, and that's why the rev hang is so maddening! I just wish there was a cheaper way to bypass. I'm not really interested in making more power, I just want to make it more driveable, that's all.
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