Hey Everyone,

Does anyone know how to turn off the rev matching feature on a 6MT?

Thanks,
TL-Rocket

 

Just curious, what would cause you to want to do that?

 

Yeah i've been looking for a way as well and nothing...


Why? Because it gets in the way more than it helps haha

 

Try a search for the rev hang. It's pretty much impossible to get rid of with the stock ECU.

 

I don't have rev matching, but I did have rev hang in my 07 tl-s 6MT.

Calibrating my throttle body with an HDS tool fixed this problem. I hated it.

 

im a bit confused here, so does the 6mt TL have rev matching feature or not? is it like the 6mt 370z's syncro-rev?

i know the 5at 07-08 TL rev matches but its very subtle. but if you drove an 04-06 tl right afterwards its noticeable

 

Definitely no rev matching on the 6mt or the OP has the rarest of all TLs. I made the assumption that he was using the wrong term.

Off topic but I believe the rev matched downshifts of the later auto are there to improve transmission life which I'm sure they do and marketed as a performance/comfort item. Sort of like the hill decent assist. It helps hold your speed steady but it also gives the injectors a chance to shut off anytime you're coasting downhill.

 

^right, I think the OP's talking about rev hang.
when switching gears, you have to let the RPMs fall a little bit before releasing the clutch.

 

rev hang. release the gas a split second earlier when shifting.

and it's not technically rev-matching when it just hangs where you left it.

 

hate this....hard to do quick shifts. feels like crap when a corolla takes you off the line.

 

I never owned a manual car, but what is so bad about rev hang? I mean even if you shift quick wouldn't it mechanically force the rpms to match the next gear anyways?

 

Mine rev matches... upshifts only not on downshifts. I will have to take a video. I do a 1st and 2nd gear pull, so at 50-60mph, the rpms are over 5,500 when i let off the clutch and then the needle will fall down in steps expecting me to shift into 3rd, 4th, and 5th but I want to put it into 6th at that speed. It defiantly does I am positive. It doesn't just randomly hang wherever it wants.

 

You're right, but you would feel it. Shifts wouldn't be as smooth.

A lightweight flywheel would help as well, wouldn't it?

 

It makes a decent manual driver look like a beginner. It probably helps crappy drivers.

 

i'd like to see video of that. i dont necessarily doubt you, since i dont shift that high at all so i dont even notice it. but it's definitely not an official feature.

 

This feature has been covered many times over the years. My car isn't here today (wife has it) so I can't go check to verify it is in the owners manual or not, but I will confirm that I have the same behavior in my '05.
https://acurazine.com/forums/3g-tl-2004-2008-93/have-you-found-any-new-features-summary-post-1-3g-garage-l-001-a-540216/

 

Interesting there were some features I wasnt aware of........thx

 

Whoever wrote that got engage and disengage mixed up.

 

i guess i'll try it after work today. I like to baby my TL but meh wringing it out once in a while shouldnt hurt.

it doesnt make sense to me why it only takes affect above a certain rpm.

 

The way it is written, yes....if they would add "pedal" into the wording it would be fine.

 

is this rev matching feature for upshifts only? or down shifts too?

 

Upshifts only. Rev matched downshifts is more of an "Active rev-matching" type of thing.

 

I swear my type-s does not rev match. In fact I had a base 6MT owner drive my car and say the same thing.

 

tried to do it a few times, and all i noticed was the rate of drop seems to slow when dropping from such a high RPM but at no point did it appear to "step" down or pause at a certain rpm. I did this in first gear.

may need to just try it some more. didnt realize how long some of the gears are.

in any case, i'd never experience this daily since i dont rev to 3500 driving normally at all. Maybe i get that high on an on ramp, but i'm never staring at my tach to notice.

 

yeah i think this is bunk. Tried it a few times to work today in 1st and 2nd gear where it allegedly happens at 3500 and 4000 rpm.

At no point did I see the engine speed step down in anticipation for higher gears. at around 2k the rate of engine deceleration appeared to slow slightly but nothing that matched the road speed. I think this is just a byproduct of a heavy flywheel and high RPM. Once i revved to 4k in 1st and "dropped" the clutch in 2nd, nope, lurched like it should have.

 

http://www.youtube.com/watch?v=lZoIC...ature=youtu.be

Here you go. You can see the rpms drop, and sit at around 3,400 then drop down again to 2,100. Wanting me to put it in the following gears. If I were to have put it in the gear to match the rpms it was giving me, it is exactly where it needs to go.

This is nice but as you can see if I were to do a second gear pull, then want to put it into 5th or 6th there are many seconds of waiting which gets annoying. Yes you can let up on the clutch but that would increase clutch wear.

 

Clearly has to be controlled electronically if I am correct and the only way to get rid of it would be a tune I assume.

 

That's ridiculously slow. If it were something you could turn on and off I would have no issues with it but it punishes good divers to help bad drivers. I shift pretty quick even when accelerating slowly and I skip gears sometimes too. That "feature" would drive me crazy.

 

Believe me, it does.

 

huh that's weird. Maybe it wasnt on the 04?

Mine definitely didnt step down like that.

or maybe it needs to be above 4k

 

I believe it does need to be above a certain rpm level. Try it out. Would be interesting to see if it is year specific though.

 

I always wondered why my car did the rev hang until reading a post from IHC about it a few years ago. I'm not a fan at all.

Like everyone else said, it really punishes the good manual drivers to help the bad ones.

 

okay yeah mine doesnt do it or isn't nearly as obvious. went to 5k in 2nd gear pushed clutch in and watched

It slows down at around 3k and continues dropping. It never steps down or holds momentarily, it's always descending. I can take a video of mine too lol.

but if people dont like the "rev match" i'll leave mine alone and be happy with it.

 

My 05 6MT definitely rev matches on down-shifts. Never noticed it on up-shifts though. This has been covered a bunch of times on here. So long as your over 3K Rpm and blip the throttle yourself. After the rpms rise from your blip, the needle will stabilize at the correct rpm for the next gear down.

Took me a few tries to REALLY notice it, but it definitely works. I've even seen it make a slight correction and bring the rpm up higher than my weak blip.

BTW: Not sure if double clutching is necessary (I don't think so). I always double clutch big down shifts, so I don't know.

 

^first theres no rev matching on down shifts and NOW there is?! which is it?! im so confused

 

i always double clutch my downshifts but i'm never driving aggressively, usually doing it for a turn on the streets so i'm doing more of a heel-toe double clutch and the rpms are always under 4k.

havent noticed rev matching on either up or down. maybe my TL is speshul.

 

This is the exact same as mine. The only time I really use it is when preparing to downshift....I blip the throttle and let it settle down to the right RPM and then let the clutch out....buttery smooth downshifts on the highway.
I double clutch anytime I skip gears. I think I recall threads on here a while back discussing this with SouthernBoy chiming in regarding the wear on the clutch vs the wear on the synchros.

 

Yes, skipping gears at minimum doubles the wear on the synchro during an up-shift. Probably more due to the increased temp of the synchro friction surface.

 

Tried this on the way home tonight 07 type s and had no rev matching, needle would drop straight from 6k rpm in 1st or 2nd to 1k rpm and never stop

 

You talking about up-shifts or down-shifts?