Official Nissan 370Z Synchro Rev Match Transmission thread

[AK370Z]

Okay, after getting pms from many YouTube users wanting to know about How the new 370Z "SynchroRev Match Transmission" works, I have decided to upload this video.

From Nissan USA website

Groundbreaking SynchroRev Match manual transmission technology, available on the Sport Package, monitors the 6-speeds clutch pedal operation, shift lever movement and vehicle speed. Shifting to a lower gear automatically blips the throttle to the ideal engine RPM for a smooth downshift. With smoother shifts helping to keep the chassis balanced, this transmission is able to deliver handling and power.

Quick Reference Guide:

http://www.the370z.com/images/370zfo...he370Z_com.pdf

Originally Posted by Quick Reference Guide

The SynchroRev™ Match Mode (S-MODE) automatically adjusts the engine speed by controlling the engine throttle. This helps provide accurate engine speed control that will help achieve smooth gear shifting and reduces shift shock on clutch engagement.

WHEN DOWNSHIFTING
-The engine speed is automatically increased to the target engine speed before the clutch is engaged.

WHEN UPSHIFTING
-The engine speed is automatically kept during and after the engine speed lowers to the target engine speed.

DEACTIVATING THE S-MODE SYSTEM
-To deactivate, push and hold the S-MODE switch for
more than 1 second. The S-MODE indicator will
turn off.

-To reactivate, Push the S-MODE switch .The S-MODE indicator on the instrument cluster will show S.

Okay.. Now, I was NOT aware of the up shifting system until today . So does this mean, when I upshift, I just have to clutch in and shift the gearbox without worrying about the gas padel?

[Slidefox]

There's an upshift??

So does that mean I can finally double-clutch like I should, instead of granny shifting??

[BoostedMKIV]

Originally Posted by Slidefox

There's an upshift??

So does that mean I can finally double-clutch like I should, instead of granny shifting??

*chuckles*

Am I the only one that got that?

[Zlips]

Originally Posted by BoostedMKIV

*chuckles*

Am I the only one that got that?

Nope...LOL I need NOS haha.

[SkyZ]

Prepping for race wars i see. Well u'll need 2 of the big bottles.

Originally Posted by Zlips

Nope...LOL I need NOS haha.

[PloppityDrown]

From Edmund's Inside Line:

SynchroRev Match is all zeros and ones--there is no black box or additional hardware. The 370Z's engine controller simply compares the engine speed to the data being fed by the rear wheel speed sensors. Since it "sees" the gear lever position and "knows" all of the gear ratios in the transmission, simple math dictates what the engine speed needs to be when you go for, say third gear at 60 mph.

Since the Synchro-Rev-Matching is performed by comparing engine speed to rear wheel speed, wouldn't altering the rear tire size (and therefore the gear ratios) reduce the system's accuracy?

I've never seen this mentioned, so maybe the effect is negligible (+/- 5%) or the system is able to trim out changes in gear ratio. You'd think Nissan would have designed the system that way, since the gear ratio changes slightly as the tires wear. Have you guys ever noticed imperfect rev-matches with new tires?

[TheManTheMyth]

So when the car is started....is synchro rev match automatically always on?

[AK370Z]

Originally Posted by TheManTheMyth

So when the car is started....is synchro rev match automatically always on?

No. You have to activate the S mode. BUT once activated, it'll remember the setting. So, next time you start the car up, it'll be on.

[TheManTheMyth]

Interesting. Thanks for the info!

[SHIFT_Z]

Originally Posted by AK370Z

Okay.. Now, I was NOT aware of the up shifting system until today . So does this mean, when I upshift, I just have to clutch in and shift the gearbox without worrying about the gas padel?

wow, i wonder if tht is really the case? just clutch n shift?

[diabolus370z]

Originally Posted by SHIFT_Z

wow, i wonder if tht is really the case? just clutch n shift?

Wow, I think that must be true, and would explain what I experienced during my test drive yesterday. I was having a hard time upshifting the car when I was driving it, but I thought it was because I wasn't used to the 370's tranny and clutch. I distinctly remember on a couple of occasions the engine revving slightly when upshifting, even though I hadn't touched the gas pedal.

[Skaterbasist]

I have driven the 370Z myself and, even before the test drive, I was curious to see if the syncro rev-match feature did anything during upshifts- it did not. You can easily jolt the car with crappy shifts (not rev-matching your upshifts). Maybe im missing something here, but atleast during my test drive, it didn't do anything for my upshifts.

I see that as a good thing. Rev matching itself is a peace of cake during downshifts. Now if someone really needs to get their upshifts rev-matched or is just to lazy to do so themslves, then that's pretty sad. Even with the optional off-button, that person should look into a 7AT instead.

[LiquidZ]

I did not know there was anything for upshifting. We need some more info!

[TomatoEvo]

I noticed this in a video a few weeks ago. I didn't know it was the synchroshift at the time, thought it was just a heavy flywheel, a clutch delay valve or something of that nature.

You can actually hear the upshifts hang on this video of the Mine's track test.

[LiquidZ]

Originally Posted by TomatoEvo

I noticed this in a video a few weeks ago. I didn't know it was the synchroshift at the time, thought it was just a heavy flywheel, a clutch delay valve or something of that nature.

You can actually hear the upshifts hang on this video of the Mine's track test.

I remember that video and everybody thought he was powershifting.

After this thread, I really don't think so anymore.