Rev Match daily driving

scope22 · 06-21-2016, 02:23 PM

Quote:

Originally Posted by JARblue

FWIW, the owner's manual has minimum operating speeds for each gear. You can stay in 6th gear down to 35 mph. The minimum speeds for each gear are around 1200-1500 RPMs for reference.

may as well just get a prious...

JARblue · 06-21-2016, 02:31 PM

Quote:

Originally Posted by scope22

may as well just get a prious...

Real drivers only need two gears in the Z. 1st gear redlines at 35 mph. 6th gear for anything over 35 mph. Downshifting is

but you just get a new transmission under warranty every 5K miles or so

Dirk McGurck · 06-21-2016, 03:03 PM

I would, except mine doesn't work.

Jsolo · 06-21-2016, 03:05 PM

Could it be the OP's technique that's causing the revs to shoot up?

We don't have rev matching in the G so it's up to the driver to do it if they want a smooth shift. For the life of me I can't heel/toe, but can manually rev match relatively well most of the time.

I've found the smoothest way to downshift is clutch in (pedal depressed) is to do so right at the point where the trans is neither loaded or unloaded. I get no unexpected rpm spikes this way. Perhaps the OP is depressing the clutch too soon before easing off the throttle?

That said, I don't know how the logic in the 370z rev match works exactly. Is it actually expecting a shift to the next lower gear, or any lower gear? I figure if the latter, it'd be blipping the throttle based on the appropriate rpm for that specific gear. Neutral is not a gear.

JARblue · 06-21-2016, 03:10 PM

SRM anticipates which gear you are going into when you pass near the gate. Since the neutral position for the shifter is between 3-4 gear, downshifting from 5th or 6th gear into neutral will always trigger the rev match because it thinks you want to go to 3rd or 4th gear. If you move the shifter back and forth in the neutral position, SRM will react as you pass each gear gate according to your speed.

cv129 · 06-21-2016, 03:31 PM

JAR describes the OP's scenario exactly.

From high speed, if OP wants to coast in neutral with SRM on - When shifting out of 5th or 6th, keep it in the space between 5th and 6th just for a moment instead of letting the shifter bounce to its natural position in the middle right away. Once SRM knows you are not going into another gear, rev will free fall instead of up or hold. At that point OP is safe to let the stick to its natural position.

BGTV8 · 06-21-2016, 04:13 PM

Quote:

Originally Posted by bthomas87

I daily drive my 2016 sport with manual trans and I just always leave it in "S" mode / rev match. I find that I have to be careful when coming off the interstate or slowing down from higher speeds. The rev match thinks I'm going to down shift but all I want to do is throw it in nuetral and use the brakes. Every time you throw it in neutral it just free revs like crazy, especially at highway speeds. Does this bother anyone else? Is it okay to leave in in S mode for daily driving?

Why throw it into neutral ................... leave it in gear and shift to an appropriate lower gear as the car slows ...........

Sorry, do not understand the rationale behind your "technique"

bthomas87 · 06-21-2016, 04:31 PM

Quote:

Originally Posted by cv129

JAR describes the OP's scenario exactly.

From high speed, if OP wants to coast in neutral with SRM on - When shifting out of 5th or 6th, keep it in the space between 5th and 6th just for a moment instead of letting the shifter bounce to its natural position in the middle right away. Once SRM knows you are not going into another gear, rev will free fall instead of up or hold. At that point OP is safe to let the stick to its natural position.

Ah, nice idea. I'll have to see if that works.

nis350 · 06-21-2016, 08:53 PM

Don't move the stick to the left when shifting to neutral at higher speed.

the engine would rev quite high if it thinks you're down shifting into 1st or 2nd gear.

Don't think it would hurt anything with the rev limiter, just a bit annoying.

Quote:

Originally Posted by cv129

JAR describes the OP's scenario exactly.

From high speed, if OP wants to coast in neutral with SRM on - When shifting out of 5th or 6th, keep it in the space between 5th and 6th just for a moment instead of letting the shifter bounce to its natural position in the middle right away. Once SRM knows you are not going into another gear, rev will free fall instead of up or hold. At that point OP is safe to let the stick to its natural position.

kenchan · 06-21-2016, 08:59 PM

Quote:

Originally Posted by bthomas87

I daily drive my 2016 sport with manual trans and I just always leave it in "S" mode / rev match. I find that I have to be careful when coming off the interstate or slowing down from higher speeds. The rev match thinks I'm going to down shift but all I want to do is throw it in nuetral and use the brakes. Every time you throw it in neutral it just free revs like crazy, especially at highway speeds. Does this bother anyone else? Is it okay to leave in in S mode for daily driving?

Why u throw it into neutral and use the brakes? Use engine braking or just get a AT car..

Davey · 06-21-2016, 09:22 PM

Quote:

Originally Posted by BGTV8

Why throw it into neutral ................... leave it in gear and shift to an appropriate lower gear as the car slows ...........

Sorry, do not understand the rationale behind your "technique"

What he said. ^

white37014 · 06-22-2016, 12:27 PM

Quote:

Originally Posted by bthomas87

I daily drive my 2016 sport with manual trans and I just always leave it in "S" mode / rev match. I find that I have to be careful when coming off the interstate or slowing down from higher speeds. The rev match thinks I'm going to down shift but all I want to do is throw it in nuetral and use the brakes. Every time you throw it in neutral it just free revs like crazy, especially at highway speeds. Does this bother anyone else? Is it okay to leave in in S mode for daily driving?

An old time racer from Germany told me no reason to ever put in N, save breaks by using engine breaking and if you ever need to move out of the way quickly when coming off an off ramp car is in gear and you can maybe get out of the way in neutral you would be done.

BuckeyeZ · 06-22-2016, 12:59 PM

Quote:

Originally Posted by cv129

JAR describes the OP's scenario exactly.

From high speed, if OP wants to coast in neutral with SRM on - When shifting out of 5th or 6th, keep it in the space between 5th and 6th just for a moment instead of letting the shifter bounce to its natural position in the middle right away. Once SRM knows you are not going into another gear, rev will free fall instead of up or hold. At that point OP is safe to let the stick to its natural position.

^THIS^ I do this on a somewhat regular basis (mostly off-ramps) and it works.

I know opinions will differ, but for me if I can coast down from a relatively high speed versus hitting all the downshifts to come to a stop, why wouldn't I? I would rather put the wear on the brake pads than the clutch, transmission, and engine. I would rather pay to replace brake pads than any of the other components ($$).

ZHighlander · 06-22-2016, 01:31 PM

Quote:

Originally Posted by BuckeyeZ

^THIS^ I do this on a somewhat regular basis (mostly off-ramps) and it works.

I know opinions will differ, but for me if I can coast down from a relatively high speed versus hitting all the downshifts to come to a stop, why wouldn't I? I would rather put the wear on the brake pads than the clutch, transmission, and engine. I would rather pay to replace brake pads than any of the other components ($$).

It's completely up to you, but it's worth noting that if you're in neutral in relatively high speeds, you have a lot less control of the vehicle should you need to make any sudden course changes for emergencies. In this case, it's not about brake or clutch wear, but vehicle safety.

The way I do it, if I know I'm going to decelerate to a stop, is leave in 6th or 5th and use the brakes till near the moment of stopping before setting in N, if I don't feel like downshifting is necessary. I would still have some acceleration control if needed, but still less wear on clutch.

Again, how you drive is up to you. But at least know that your control is much more limited while in Neutral. You don't have to take my word for it. Pro drivers and trainers can give you the same info.

bthomas87 · 06-23-2016, 06:08 PM

Quote:

Originally Posted by cv129

JAR describes the OP's scenario exactly.

From high speed, if OP wants to coast in neutral with SRM on - When shifting out of 5th or 6th, keep it in the space between 5th and 6th just for a moment instead of letting the shifter bounce to its natural position in the middle right away. Once SRM knows you are not going into another gear, rev will free fall instead of up or hold. At that point OP is safe to let the stick to its natural position.

Finally had the chance to try this out this morning on my drive to work. Works perfect! Thank you all for the advice

06-21-2016, 03:03 PM	#18 (permalink)
Dirk McGurck Track Member Join Date: Jun 2014 Location: Delaware Posts: 715 Drives: 09 MB 370Z Touring Rep Power: 21	I would, except mine doesn't work. __________________ 2009 370Z Touring with Sport

06-21-2016, 03:05 PM	#19 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 15	Could it be the OP's technique that's causing the revs to shoot up? We don't have rev matching in the G so it's up to the driver to do it if they want a smooth shift. For the life of me I can't heel/toe, but can manually rev match relatively well most of the time. I've found the smoothest way to downshift is clutch in (pedal depressed) is to do so right at the point where the trans is neither loaded or unloaded. I get no unexpected rpm spikes this way. Perhaps the OP is depressing the clutch too soon before easing off the throttle? That said, I don't know how the logic in the 370z rev match works exactly. Is it actually expecting a shift to the next lower gear, or any lower gear? I figure if the latter, it'd be blipping the throttle based on the appropriate rpm for that specific gear. Neutral is not a gear. __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links

06-21-2016, 03:10 PM	#20 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	SRM anticipates which gear you are going into when you pass near the gate. Since the neutral position for the shifter is between 3-4 gear, downshifting from 5th or 6th gear into neutral will always trigger the rev match because it thinks you want to go to 3rd or 4th gear. If you move the shifter back and forth in the neutral position, SRM will react as you pass each gear gate according to your speed. cv129, marty31 and AestheticCM1 like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

06-21-2016, 03:31 PM	#21 (permalink)
cv129 A True Z Fanatic Join Date: Jul 2011 Location: Dallas, TX Posts: 3,235 Drives: 09 Nismo, 16 Nismo Rep Power: 163995	JAR describes the OP's scenario exactly. From high speed, if OP wants to coast in neutral with SRM on - When shifting out of 5th or 6th, keep it in the space between 5th and 6th just for a moment instead of letting the shifter bounce to its natural position in the middle right away. Once SRM knows you are not going into another gear, rev will free fall instead of up or hold. At that point OP is safe to let the stick to its natural position. __________________ Setrab \| RE-71 \| SPL \| JRZ \| Nismo \| ARK \| Whiteline \| RacingBrake \| CJM Oil Pan \| Ti shield Last edited by cv129; 06-21-2016 at 03:35 PM.

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