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-   -   SynchroRev Match (http://www.the370z.com/nissan-370z-general-discussions/16026-synchrorev-match.html)

ryanboy 03-16-2010 10:00 AM

SynchroRev Match
 
is it just me or this thing doesn't activate right away when its on?

for example... while not moving/stopped, then i turn it on.... but on the initial take off it doesn't work until i change gears the 2nd time around. Is this normal?

Hugoneus 03-16-2010 10:04 AM

Quote:

Originally Posted by ryanboy (Post 448582)
is it just me or this thing doesn't activate right away when its on?

for example... while not moving/stopped, then i turn it on.... but on the initial take off it doesn't work until i change gears the 2nd time around. Is this normal?

The SynchroRev Matching is activated on downshifting, so it is not clear to me what you are trying to do. If you are in first gear and taking off, syncrorev will do nothing. But if you shift to 2nd, then downshift to first it will try to match your engine to your speed. However, as I have learned recently, do not downshift into first gear. Try this with 4th to 3rd to see it work.

FuszNissan 03-16-2010 10:06 AM

SynchroRev matches upshifts and downshifts.

370Zsteve 03-16-2010 10:10 AM

Quote:

Originally Posted by FuszNissan (Post 448591)
SynchroRev matches upshifts and downshifts.

I have to take Lou's word on anything Z-related, but this is the first time I've read that SRM matches upshifts. I never knew that!

Hugoneus 03-16-2010 10:15 AM

Quote:

Originally Posted by 370Zsteve (Post 448594)
I have to take Lou's word on anything Z-related, but this is the first time I've read that SRM matches upshifts. I never knew that!

I'd like to take his word for it, but I just don't understand what it means to RevMatch on an upshift...

ryanboy 03-16-2010 10:15 AM

Quote:

Originally Posted by Hugoneus (Post 448588)
The SynchroRev Matching is activated on downshifting, so it is not clear to me what you are trying to do. If you are in first gear and taking off, syncrorev will do nothing. But if you shift to 2nd, then downshift to first it will try to match your engine to your speed. However, as I have learned recently, do not downshift into first gear. Try this with 4th to 3rd to see it work.

yeah... i thought it matches up and down shifts? when im hitting 1st gear... then 2nd gear or 3rd gear... it doesnt match my revs. But when i start over again after that... its start working. am i not understand how this really works?

imma go a few more runs later, play with it a little more and see how it really works.

FuszNissan 03-16-2010 10:16 AM

Go out in your car and hold the clutch in and just coast, you will see the car will hold the REV's at the optimal shift point for when you decide to go back in gear or upshift.

ryanboy 03-16-2010 10:26 AM

Quote:

Originally Posted by FuszNissan (Post 448606)
Go out in your car and hold the clutch in and just coast, you will see the car will hold the REV's at the optimal shift point for when you decide to go back in gear or upshift.

so if i go 1st gear... then hold the clutch in and just coast... will i see the car hold the REV's at the optimal shift point?

Hugoneus 03-16-2010 10:29 AM

Quote:

Originally Posted by FuszNissan (Post 448606)
Go out in your car and hold the clutch in and just coast, you will see the car will hold the REV's at the optimal shift point for when you decide to go back in gear or upshift.

That is not SyncroRev matching on upshifts. The car holds the RPM to be prepared for a downshift where it needs to rev up the engine. The car would have to slow down the engine very quickly before you release the clutch for a upshift matching, which I do not believe it does.

If you are in second gear and pushing the engine to 7k RPM and then you shift into 6th, does the car slow down the engine before you release the clutch? That would be syncrorev matching on an upshift.

m4a1mustang 03-16-2010 10:34 AM

SRM only comes into play on an upshift if you allow the rpms to drop below the engine speed for the next gear... it will bump the rpms up as necessary... come on guys, this is really simple.

FuszNissan 03-16-2010 10:35 AM

Quote:

Originally Posted by m4a1mustang (Post 448629)
SRM only comes into play on an upshift if you allow the rpms to drop below the engine speed for the next gear... it will bump the rpms up as necessary... come on guys, this is really simple.

Thank you..

m4a1mustang 03-16-2010 10:37 AM

Ecu?

Matt 03-16-2010 10:44 AM

Quote:

Originally Posted by m4a1mustang (Post 448629)
SRM only comes into play on an upshift if you allow the rpms to drop below the engine speed for the next gear... it will bump the rpms up as necessary... come on guys, this is really simple.

:iagree:

ryanboy 03-16-2010 10:50 AM

Quote:

Originally Posted by m4a1mustang (Post 448629)
SRM only comes into play on an upshift if you allow the rpms to drop below the engine speed for the next gear... it will bump the rpms up as necessary... come on guys, this is really simple.

so another words... if the SRM is not working when its activated, it basically means im a gear shifting master! bc its suppose to only bump the rpms up when its necessary :bowrofl:

FuszNissan 03-16-2010 10:58 AM

Quote:

Originally Posted by ryanboy (Post 448650)
so another words... if the SRM is not working when its activated, it basically means im a gear shifting master! bc its suppose to only bump the rpms up when its necessary :bowrofl:

:happydance::driving:

Hugoneus 03-16-2010 10:59 AM

Quote:

Originally Posted by m4a1mustang (Post 448629)
SRM only comes into play on an upshift if you allow the rpms to drop below the engine speed for the next gear... it will bump the rpms up as necessary... come on guys, this is really simple.

Sure, I can agree with that. But the SyncroRev never actually slows down the RPMs.

m4a1mustang 03-16-2010 11:02 AM

Quote:

Originally Posted by Hugoneus (Post 448666)
Sure, I can agree with that. But the SyncroRev never actually slows down the RPMs.

Never said it did.

FuszNissan 03-16-2010 11:05 AM

No it will not slow down the RPM's.

trent1331 03-16-2010 11:19 AM

These threads are tiring..

Go and turn sync rev off, then shift up and hold the clutch in, and coast.
Your RPM's will drop to under 1k
Doing the same thing with rev match on - will hold your rpms at the best RPM.
Its not that hard to understand.

PapoZalsa 03-16-2010 06:33 PM

I don't feel the SRM anymore, I guess I got used to it.

ryanboy 03-17-2010 12:11 AM

Quote:

Originally Posted by trent1331 (Post 448690)
These threads are tiring..

Go and turn sync rev off, then shift up and hold the clutch in, and coast.
Your RPM's will drop to under 1k
Doing the same thing with rev match on - will hold your rpms at the best RPM.
Its not that hard to understand.

oh i think we all know how it works now... its something new to some of us and just getting the feel of it.

and when you have a brand new car... you want to make sure everything is working the right way, youknowwhatimsaying ;)

ryanboy 03-17-2010 12:12 AM

how often do you guys use SRM???... do you guys just leave it on all the time?

ryanboy 03-28-2010 10:08 PM

Quote:

Originally Posted by ryanboy (Post 450194)
how often do you guys use SRM???... do you guys just leave it on all the time?

is it bad to leave it on all the time? yes? no?

Nick911sc 03-28-2010 10:14 PM

It's better for the car to be left on all the time since it's so accurate. But, if you're a good enough driver to be accurate it has little advantage as far as wear on the engine.

CWofRR 03-29-2010 01:44 AM

I drive with it on all the time. It's supposed to be better to leave it on though.

rcm2525 03-29-2010 04:53 AM

Quote:

Originally Posted by ryanboy (Post 469927)
is it bad to leave it on all the time? yes? no?

The car was designed to have it on all the time. I don't think it really matters weather it's on or off and won't harm the car unless you miss a lot of your shifts while it's off.

ryanboy 03-29-2010 06:40 AM

i have notice my mpg goes down:-(

WhiskeyHotel 03-29-2010 07:20 AM

C'mon. How much? One tank? Two tank average? Same EXACT driving route and conditions? I seriously doubt that the test was rigorous enough to have any statistical significance at all. I'm open, however - show me the data and how you conducted the test.

ryanboy 03-29-2010 07:23 AM

Quote:

Originally Posted by WhiskeyHotel (Post 470279)
C'mon. How much? One tank? Two tank average? Same EXACT driving route and conditions? I seriously doubt that the test was rigorous enough to have any statistical significance at all. I'm open, however - show me the data and how you conducted the test.

same routes... but maybe ive been driving it harder. ill keep a closer observation next time and write up some data :driving:

kenchan 03-29-2010 02:51 PM

who cares about mpg, just have fun with the car. :p

NCSUPACK09 03-29-2010 03:54 PM

There shouldn't be a difference in MPG whether you blip the throttle on a downshift or the car does it for you. I can see, however, that because the car has such precise blips on downshifts that you would be more willing blip it at a higher RPM (because you don't have to worry about not matching the RPMs correctly), which means you are probably accelerating harder than your normally would. IDK...just a thought.

ryanboy 03-29-2010 06:27 PM

Quote:

Originally Posted by NCSUPACK09 (Post 471240)
There shouldn't be a difference in MPG whether you blip the throttle on a downshift or the car does it for you. I can see, however, that because the car has such precise blips on downshifts that you would be more willing blip it at a higher RPM (because you don't have to worry about not matching the RPMs correctly), which means you are probably accelerating harder than your normally would. IDK...just a thought.

i think you are right... i noticed that today


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