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Question about 5EAT manual downshift


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Hello,

 

Lurking for awhile and while searching found that the 5EAT transmission is the same as the one Infinity uses. As such, the Infinity auto transmission will rev match when you manually downshift. Does the LegacyGT's auto do the same? Thanks

 

Peace

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Honestly I havent paid that much attention as I am concentrating on the road when I am driving in a spirited fashion. That said I can confirm that downshifts never feel forced or jarring as in other vehicles so it is possible. There are several other active members here who can probably answer this more presisely.
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No it doesn't rev match.

 

Downshift from 3rd to 2nd at about 50MPH and you will see what I'm talking about.

 

I usually blip the throttle while it downshifts and most of the time I get a flawless shift.

I keed I keeed
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Can't say I've really noticed. I do usualy blip the throttle though just as I downshift to avoid drivetrain jarring.....old habit I guess not because I've noticed any bad downshifts. I'll have to give it a whirl tonight and see.

 

Brian

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Is the 5EAT the same trannie as the Inifiniti one????

 

Where did you get that info man???

 

I am curious to see that...

 

Thanks

 

Flavio Zanetti

Boston, MA

 

I'm not sure where in this forum I found that (searching and reading over a couple of weeks) info but someone posting about AWD tech differences between the MT and AT described that both subaru and infiniti outsource the AT from JATCO, I believe. Being that, it would seem feasable to program the ECU similar to the G35 AT which does rev match on the downshift. Granted, there is a manual mode for this operation which "melayout" already described...blipping the throttle..however that would be a cool feature for the AT to do it automatically. Thanks all for the responses.

 

Peace

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Yo Camoe,

 

Tx for your words man...

 

A friend of mine would be happy with this post, once when we test drove a G35 auto and he saw the rev matching on downshifts he was wondering if it would do it on his LGT...

 

JATCO, nice to know that...

 

;-)

 

Peace out,

 

Cheers,

 

Flavio Zanetti

Boston, MA

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it's been said here many times that nissan uses the same 5EAT tranny in some of thier vehicles. I'm not sure which ones off the top of my head though. (I believe the new Titan is one of them)

 

also -- the rev matching isnt something that was added to the G35 until this year i believe. It's most likely an ECU programming thing. I'm sure the capability is there in any 'manumatic' transmission, its just a matter of programming.

 

i've read that the Accessport seems to smooth downshifts a bit as well on the LGT auto tranny.

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Here you go, from http://www.jatco.co.jp/E_JATCO/SHOHIN/AT_E.HTM :

 

 

http://www.jatco.co.jp/E_JATCO/SHOHIN/ZU/P26.jpghttp://www.jatco.co.jp/E_JATCO/SHOHIN/PIC_AT/pic_08.gif

 

Wide gear ratio

 

High torque capacity

 

Top class, ultra-light design

 

Main vehicles equipped with this AT:

NISSAN PRESIDENT, CIMA, FUGA, SKYLINE, ELGRAND, FAIRLADY Z

and other vehicles

 

Edit: Btw if you check out JATCO's Main Customers on their website, FHI is one of them.

I keed I keeed
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Here you go, from http://www.jatco.co.jp/E_JATCO/SHOHIN/AT_E.HTM :

 

 

http://www.jatco.co.jp/E_JATCO/SHOHIN/ZU/P26.jpghttp://www.jatco.co.jp/E_JATCO/SHOHIN/PIC_AT/pic_08.gif

 

Wide gear ratio

 

High torque capacity

 

Top class, ultra-light design

 

Main vehicles equipped with this AT:

NISSAN PRESIDENT, CIMA, FUGA, SKYLINE, ELGRAND, FAIRLADY Z

and other vehicles

 

Edit: Btw if you check out JATCO's Main Customers on their website, FHI is one of them.

 

There you have it then...;...Damn you guys are good!

 

Peace

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Thanks my man froM Morrisville, NC!!!!!

 

heheheheheeheh

 

Always on top of the technical part of it...

 

We had an Infiniti FX35 (huge discounts through my company) as my fiancee was driving it, and the shifting was really amazing, now it can explain why!!!!

 

Thanks again,

 

Cheers ya'll...(rememberring my old days in NC)

 

Flavio Zanetti

Boston, MA

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No, sorry Jatco does not make this tranny. Look here:

http://www.legacygt.com/forums/showthread.php?t=1711&highlight=prodrive+5eat

 

Prodrive makes the 5EAT.

SPORTSHIFT is a registered trademark of Prodrive. Electronically controlled 5-speed Automatic Transmission (5EAT SS)

http://www.subaru.ca/content/7907/media/en-ca/download/Legacy2005_Brochure.pdf

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Hello,

 

Lurking for awhile and while searching found that the 5EAT transmission is the same as the one Infinity uses. As such, the Infinity auto transmission will rev match when you manually downshift. Does the LegacyGT's auto do the same? Thanks

 

Peace

 

Back on topic... while driving home tonight I downshifted without blipping the throttle. Actually downshifted through two gears to try to get a semi-hard downshift. The tranny definitely didn't jar or bang, nor did it rev-match as suspected and this was a reasonably aggressive downshift.

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not if you are already moving.

 

The problem is slowing down to take a bump.. still in second... then going down a hill.

 

you are too slow rpm wise to upshift to 3rd (no arrow) so you make it to the bottom of 2nd gear.

 

You speed up slightly on the hill... but car unexpededly goes to first gear.. causing the drivetrain clunk

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Our transmission doesn't shift unexpectedly.

 

It does it according to the maximum and minimum speed for each gear, plus whether you are on WOT and adds in your driving/shifting style it has adapted to.

 

Just familiarize yourself with those shift points and it won't be unexpected.

I keed I keeed
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Roundboy, move the shifter to Sportmode and and press a downshift button. That will keep you in the current gear and you will see the "S" change to the current gear selected. Now it will hold 2nd.
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