Rev match question about up-shifts

blackhawk867 · May 15, 2019

So first of all, I love the rev match feature and keep it on because I'm lazy and don't like to bother with heel-toe. That being said, I'm sort of having the opposite problem with it now.

During my commute, I often like to do spirited starts, which involves revving it out in 2nd/3rd gear, then skipping to 6th to coast once i'm at speed. The problem is that when I take it out of 3rd gear, the car expects me to put it in 4th, so keeps the revs hanging at where they should be for 4th. Then when I put it into 6th instead, I have to either wait for the car to realize I'm not putting it in 4th so it drops the revs, or just let the clutch out super slow so it matches the 6th gear speed.

Is there any way to avoid this without disabling the rev match feature? I know that it isn't going to noticeably wear the clutch out any faster, but I'd still like to avoid it if possible.

.grimace · May 15, 2019

It doesn't hold the revs forever. Just wait a second and they drop down and you can hit sixth at the correct RPM.

blackhawk867 · May 15, 2019

Right, that's what I meant when I said this:

blackhawk867 said:
I have to either wait for the car to realize I'm not putting it in 4th so it drops the revs

I'm asking if theres a way to remove the "match" on up shifts, but keep it for downshifts. I'm guessing that's impossible though.

.grimace · May 15, 2019

There is no match for upshifts. You can remove the rev hang with Hondata but even then you'll have to wait for the revs to drop. There is no 3rd-6th instant rev match the motor has to slow down its rotating one way or another. Automatic rev upshift would just be the clutch delaying engagement until the proper RPM is reached which no one makes that I know of.

anhanymous · May 15, 2019

try double clutching

.grimace · May 15, 2019

anhanymous said:
try double clutching

:facepalm: nope

Rated-R · May 15, 2019

My shit barely ever rev matches, I usually downshift (nothing happens) I take it out of gear go back in and that’s when it will work ... who knows

anhanymous · May 15, 2019

Rated-R said:
My shit barely ever rev matches, I usually downshift (nothing happens) I take it out of gear go back in and that’s when it will work ... who knows

this only happens to me if my revs are too low. shit catches me off guard sometimes lol, ill expect a revmatch and let the clutch out and jerk lol

tinyman392 · May 15, 2019

anhanymous said:
this only happens to me if my revs are too low. shit catches me off guard sometimes lol, ill expect a revmatch and let the clutch out and jerk lol

If you think you're near or less than 2k RPM, block shift down 2 or more gears, it'll rev match, but very slowly

RedGiant217 · May 15, 2019

.grimace said:
There is no match for upshifts.

I’m pretty sure there is though...if you get up to about 40mph in second, clutch-in, then shift to 3rd but don’t release clutch or press gas pedal, RPM will drop and then hold for a couple of seconds at optimal RPM for 3rd before dropping all the way to idle.

EDIT: I tried this out again this morning and now I'm not sure. It does seem like there is just a small hold at optimal RPM but only for about half a second so I can't really be sure.

RedGiant217 · May 15, 2019

blackhawk867 said:
So first of all, I love the rev match feature and keep it on because I'm lazy and don't like to bother with heel-toe. That being said, I'm sort of having the opposite problem with it now.

During my commute, I often like to do spirited starts, which involves revving it out in 2nd/3rd gear, then skipping to 6th to coast once i'm at speed. The problem is that when I take it out of 3rd gear, the car expects me to put it in 4th, so keeps the revs hanging at where they should be for 4th. Then when I put it into 6th instead, I have to either wait for the car to realize I'm not putting it in 4th so it drops the revs, or just let the clutch out super slow so it matches the 6th gear speed.

Is there any way to avoid this without disabling the rev match feature? I know that it isn't going to noticeably wear the clutch out any faster, but I'd still like to avoid it if possible.

There is only one “switch” for auto rev match; on or off.

What I do in this scenario is row through 4th, 5th, and 6th before releasing the clutch. Probably equivalent time to the wait you’re experiencing though. Honestly not sure why it’s rev matching 4th for you...

Zeffy94 · May 16, 2019

RedGiant217 said:
I’m pretty sure there is though...if you get up to about 40mph in second, clutch-in, then shift to 3rd but don’t release clutch or press gas pedal, RPM will drop and then hold for a couple of seconds at optimal RPM for 3rd before dropping all the way to idle.

EDIT: I tried this out again this morning and now I'm not sure. It does seem like there is just a small hold at optimal RPM but only for about half a second so I can't really be sure.

It does revmatch on up shifts. It’s noticeable if you rev it to like 4K versus 2.5k, the revs float a bit to help make the shift smoother (if you stare at the tach you’ll see the needle pause at a certain RPM). However it doesn’t pause for long at all.

blackhawk867 · May 16, 2019

Yeah you guys seem to understand what I'm getting at. Rev it up, and as soon as you take it out of gear, it will drop the RPMs slightly to where the next gear should be, pause for a second, and then start dropping to idle.

I've tried revving out in 3, pushing clutch in, rowing through 4 and 5 without releasing clutch, then putting it into 6, but the time it takes to do that is pretty much the same as just taking it out of 3rd, waiting for the revs to drop, then putting it into 6th.

I'm guessing a tune would be the only way to remove that hang, so I'll just live with it. I'm glad I'm not the only one who is experiencing it though, that helps with my sanity.

TonyD · May 16, 2019

One minor suggestion. I do the same thing on my way to work but a bit differently. I carry as much speed as I can on the on ramp to the highway in 3rd gear. Work it so the speed is such that you are right at the sweet spot where you get good power. Once the ramp starts to enter the highway and I have a LONG view of the oncoming lanes and the road ahead I drop the hammer and stay in 3rd until its time to shift to 4th. Keep on the power until about 75mph which is when 4th gear is about done. Then I lift and do a slow shift into 6th to settle into the middle lane without getting too crazy. It shifts nicely and doesn't rev match weirdly.

I wonder if your 3-6 is the issue. Seems to work great for me with a 4-6 shift. Make the shift into 6th lazy so the car coasts a bit to settle into cruising speed and it should be fine.

Naruske · May 16, 2019

.grimace said:
There is no match for upshifts. You can remove the rev hang with Hondata but even then you'll have to wait for the revs to drop. There is no 3rd-6th instant rev match the motor has to slow down its rotating one way or another. Automatic rev upshift would just be the clutch delaying engagement until the proper RPM is reached which no one makes that I know of.

Mhmh kind of off topic but you can take off rev matching right from the car. No need for hondata or ktuner

Rev match question about up-shifts

blackhawk867

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.grimace

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blackhawk867

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.grimace

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anhanymous

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.grimace

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Rated-R

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anhanymous

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tinyman392

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RedGiant217

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Zeffy94

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blackhawk867

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TonyD

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Naruske

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