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Rev Hang - deep dive

xxBodom

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First Name
Arthur
Joined
Apr 23, 2025
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Los Angeles
Vehicle(s)
24' Civic Si
I had a complete tune on 91 and the rev hang was almost non existent. Tune file is locked so I cannot see as to what was done exactly but I was so used to slow shifting on stock tune/OTS tune (not as much) that with this 91 tune sometimes when I shifted from 3rd to 4th the rev match would bring the revs back up because of how quick they dropped lol

Recently got a new flex fuel tune from another tuner. (Waiting on a response on further rev hang reduction)

I've looked around and found some talk of adjusting fuel cut timing but I'm not entirely sure if it's as simple only adjusting that only and nothing else along with it?

I have my flex fuel tune unlocked and wanted to potentially mess with it myself to my liking so I'm not constantly playing phone tag with my tuner.



Any input would be greatly appreciated.
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pwp25si

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Nov 9, 2025
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2025 si
Have you adjusted your clutch pedal? After installing wunderladen racing clutch pedal bushing, i adjusted my pedal per hondas instruction.

It surprisingly made a big difference in shift feel, and although Rev hang shouldn't be affected by it, I can shift much quicker and smoother.

Im running phearable 1.5r, and rev hang is barely there. I know its only supposed to be reduced, but my rpm drops fast. Check your pedal for free play. The way it came from factory, my upper stopper wasn't even touching the pedal. It also feels like lifting off throttle quickly affects Rev hang, instead of lifting gently.

11th Gen Honda Civic Rev Hang - deep dive 250581-92dc3d62c36db9df7ac6db449afc4bb1


11th Gen Honda Civic Rev Hang - deep dive 250580-c7e57cb576207c7e2d0e2500f2ee8906


11th Gen Honda Civic Rev Hang - deep dive 250582-06bc4b055327c4f55230828530da043a
 
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