7 Speed Automatic Transmission: SynchroRev match vs Non-SynchroRev match

MeetJoeAsian

The Sport Package for the 7AT costs the same as the 6MT. It has everything the 6MT does, so what I really want to know is how the SynchroRev match in the 7AT helps it vs. a 7AT without it? Is there really a SynchroRev match system added to the 7AT tranny? Nissan doesn't say much about the SRM system in the automatic except that it has one. Has anyone driven the 7AT with SRM and without SRM?

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azn370z

The automatic doesn't have srm. It has dsm or whatever it's called. It rev matches on downshifts.

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Modshack

The 7AT IS $1300 more than the 6MT in either the base, sport or touring packages. SRM is on the Manual sport only. The 7AT has a downshift blip feature that is standard on that trans no matter what the car package.

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zman1910

From my understanding all the autos come standard with rev matching as do most new generation autos. It's only new on the manual tranny's....in fact Nissan is the first to do it.

The function is exactly the same...to create a smooth transition when down paddle shifting. At least in a manual you can rev match manually(and still pull off a smooth downshift) without the system engaged, but in an auto it's not possible, which is why it's standard on most autos.....prevent's all the jerkiness that comes with the whole process.

kannibul

It does it on upshifts too, don't remember conditions I was driving when it happened though

MeetJoeAsian

you're right, I just looked at it again and the automatic has Downshift Rev Match and the manual has SynchroRev Match.

So all 7AT has DRM and the 6MT only has SRM with the Sport Package, then why is the Sport Package at the same cost for both trannies?

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Modshack

Cause SRM only uses about $20 worth of switches and sensors and a bit of software magic. It's not really that expensive to do..

http://www.caranddriver.com/features...ined-tech_dept

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chief_Roka

Downshift Rev-Matching (DRM) is technology that began in the 5at G35 n trickled down into the Z maxima and altima models.
It was designed as a heal and toe simulator for auto transmissions and also throttle blip control to increase the speed of shifts in automatic transmissions.
This innovative piece of tech software has modernized auto transmissions along with DSG and PDK.
Now autos can move a car faster than a m/t tho autos are inherently 100lbs heavier.

SRM is technology copied from drm to make manual transmissions more precise in its shift and makes the driver look way more precise than he is.
As it stands new tech autos are seemingly making manuals obsolete in terms of acceleration and handling.
SRM IS KEEPING MANUALS IN THE GAME AND ON THE CUTTING EDGE OF TECHNOLOGY.
I guess that's the best way to explain it in laymans terms.

Lug

The 7AT is only 36 or 37 lbs heavier than the 6MT.

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chief_Roka

Yes I know, 37lbs to be exact.

3,232 man base
3,278 man tour
3,269 auto base
3,314 auto tour

But I am not only speaking on the Z. I'M SPEAKING ON THE AVERAGE RATIO OF WEIGHT DIFFERENCE. IT USUALLY RANGES 80 TO 120LBS.

See this is what also makes the 7a/t tranny so great.
Show me an A/T that is so close in weight to its manual brother.
Another amazing feat by nissan.
Might I add the auto has superior weight dist. 53/47. Vs 54/46 manual.

JvKintheUSA

Check out my video about the Rev match on the 370Z A/T:

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